example: s 7 l – 3
Contents
1. p s i s DE i j i T amp se n p i E 5 _ P A u E TW m m pe B r E js 2 Cosmo PC E a z s r i 1 rs 2 i F La al 1 F sm x t um d 5 f Ps 71 a i A a I Fu E i 2 an z J i E p an d a T e I F 0 T j P SHOCK ABSORBERS i BOE Rma PAA nT Ty Mooresville NC Facility LI Aftermarket amp Motorsports East E f Mooresville NC Tech Hotline 877 666 7662 4 Lad nm m ML MR UT Hl i I HM TOT MN i T LL QUNM T Distributed By is HMM HAM r i Printed in U S A P P 3 d 2009 a i PP2450 1109 Bilstein Gas Pressure Shock Absorbers ThyssenKrupp Bilstein of America A am of ThyssenKrupp Technologies 4 J Bilstein Gas Pressure Shock Absorbers ThyssenKrupp Bilstein of America Tani Motorsports Shocks TI Talde of Corterts Model Application Description Page l Monotube vs Twin Tube Shocks AK Series Pure stock Enduro 36mm 46mm diameter sealed 8 9 Street Stock stock mount steel body stock mount Page5 Why Race On Bilstein Shock Absorbers Q amp A Mini Stock shocks and struts Page6 Bilstein Pistons and Valves SG Series Stock Cars IMCA UMP 36mm diameter sealed 10 Page 7 Tools and Accessories Modifieds Midgets steel body converts _ MEER is Modified Li2. The new Bilstein COB Digressive piston utilizes a check valve that when installed on the compression side of the piston creates less bleed and therefore more force on the rebound side 6 Bilstein Pistons and Valves going down although that can be reversed by the dyno operator with a single key stroke Below study the shock dyno graphs that illustrate the different style performance curves using two unique piston designs available from Bilstein Bleed The flow of oil through the holes in the piston is referred to as bleed or sometimes as bypass The bleed characteristic in the shock s piston design determines the amount of slow piston speed control available before the shock s valving comes into effect to control forces developed at higher velocities High bleed pistons create small amounts of damping force at low piston speeds and low bleed pistons create large amounts of damping force at low piston speeds 400 0 2 0 4 0 6 8 0 10 0 Velocity In Sec This graph depicts the Bilstein U37T linear piston combined with 37 4 cover plates The result is valving with more low speed control rce Lbs 4 0 6 0 Velocity In Sec Shown here is a standard digressive valving using a low amount of bleed Notice the large amount of force developed on both compression and rebound at slow piston speeds 4 0 6 0 Velocity
3. 13 BILSTEIN q RAC 14 TEI 1 E 1 Hi nal TA ie Designed for but is not limited to Modifieds Late Models and Sprint Cars 46mm 1 81 diameter steel body aluminum billet cap SN or steel cap SNS with schrader valve Sold in kit form less valve plates oil and nitrogen gas charge e SN aluminum billet cap e SNS steel cap e Rebuildable shock can be assembled and disassembled for rapid repair or valving change e Nickel plated for rapid heat dissipation e Valve stacks and valving kits available separately e Available with linear or digressive piston Every part of the SN shock is available separately for economical repair World class performance at a SN Saturday Night price Bilstein s famous consistent fade free performance SN Series Part No Description Extended Length Collapsed Length B46 LTA5 DTA5 5 stroke 1o32 11 48 B46 LTA6 DTA6 G IOKE 18 13 12 42 75 A B46 LTA7 DTA7 stroke 20 08 13 50 8 stroke 22 07 muar 9 stroke 23 44 15 10 B46 LTA8 DTA8 B46 LTA9 DTA9 SNS Series Part No Description Extended Length Collapsed Length B46 LTA5S DTA5S 5 stroke 16 32 11 48 B46 LTA6S DTA6S 6 stroke 18 13 12 42 B46 LTA7S DTA7S 7 stroke 20 08 12 00 B46 LTA8S DTA8S 8 stroke DOT 14 47 B46 LTA9S DTA9S 9 stroke 23 44 esos LTA Linear DTA Digressive Optional slide on coilover kit hardware an
4. Adjustable Shaft e Excellent for dirt racing 6 position adjustment knob e Broad adjustment for each position e Can be added or retrofitted to any SN or ASN shock e Can be used as open jet e Can be used with rebound check valve e Can be used with compression check valve Compression Canister e Excellent for both dirt and pavement e Knurled aluminum body 10 position adjuster Hand operated adjuster no tools required e Adds compression with each position e Base valve allows for lower rod pressure Can be added or retrofitted to any SN or ASN shock 19 20 Dwarf amp Mod Lites RECOMMENDED SET UPS Basic Set Up Asphalt PART NO S6G 4545 par sonidos L F PART NO S6G 3030 Ai S6G 3030 Basic Set Up Heavy Hooked Up Surface PART NO S6G 3535 S6G 4545 eel ace PART NO S6G 3535 L R R R S6G 4545 Basic Set Up Slick Surface PART NO S6G 3030 S6G 2040 ESSE ntis L R R R PART NO S6G 3010 S6G 3010 NOTE All of the above valving recommendations utilize our S6G Series Mini Racing shock Consult page 10 for the extended length and collapsed length for this product If your car requires a longer shock consider using the S7G Series shock also featured on page 10 Also consider moving the upper shock mounts up or down to accommodate either the S6G or S7G Series Mini Racing Shock Mint Sprins 600cc to 750cc RECOMM ENDED SET UPS Basic Set Up Dirt PART NO 966 3030 966 2040
5. I M CA Hobby Stock Class RECOMMENDED SET UPS Base Line Set Up LE RF AK5555F AK1044 or Fale nnt PART NO AK1044 AK5030R PART NO Slick Track Option PART NO AK4040F AK3060F ee atte PART NO AK6010COBR R pine 7Z 4040 or S7L 4 4S S92 4040 or S9L 4 4S 7Z 4040 or S7L 4 4S AK1043 or AK4040F Hp IRE IB F R R F R R RF R S9Z 5030 or S9L 6 2S RECOM M ENDED SET UPS Base Line 2 Link Set Up S7G 3535 or S7Z 4040 S7G 4545 or S7Z 4040 EU or S7L 3 4S LE lar orS7L 4 4S S92 3030 or LR RR 9Z 3030 or PARTNO S9L 3 3S S9L 3 3S Base Line Set Up for 4 Bar S7G 3535 or S7Z 4040 S7G 4545 or S7Z 4040 PARTNO or S7L 4 4S LE RE or S7L 4 4S 9Z 3050 or L R R R S9Z 3030 or iis S9L 3 6S S9L 3 3 7Z 4555 or S7L 5 5S 9Z 3030 or S9L 3 3S 972 4545 or S7L 6 2S 4 Bar Base Line Set Up for Dry Slick Track Conditions 976 3535 or S7Z 3545 976 3050 or S7Z 5030 ae or S7L 3 4S LE RF or S7L 6 2S S92 3050 or L R R R S9Z 3030 or PART NO S9L 3 6S S9L 3 3S 4 Bar Base Line Set Up for Heavy Tacky Track Conditions 7G 4545 or S7Z 4040 S7G 5555 or S7Z 5050 PARTNO or S7L 4 4S LF IRE or S7L 5 5S PART NO S97 3050 or L R R R S97 4040 or S9L 3 4S S9L 4 4S DP 1 Package is available for an additional cost This is a custom valving package for dry slick track that produces more feel AK5030R or AK3030R 25 26 North East Modified E RECOMMENDED SET UPS NOT
6. Pin T Bar to Eye Cantilever to Pin Eye to Eye 165 67 linear 577 359 digressive 310 130 digressive AK1198 152 103 linear 2241 122 linear AK2072 3814 233 linear 10 Designed for but is not limited to Stock Cars IMCA UMP Modifieds Midgets Mini Sprints Modified Lites and Dwarf Cars 36mm 1 42 diameter steel sealed monotube gas pressure shock e Converts to coilover applications e Economy price e Lightweight Low rod pressure Bilstein s famous consistent fade free performance Available in 6 7 and 8 strokes S6G 17 00 11 00 G S7 20 00 12 00 S8G 21 00 13 00 Available in these standard valvings Example S6G 3060 or S7G 5555 J999 6020 6035 6565 7035 8035 9010 Built with COB piston for strong tie down High bleed valving designed for rear Designed for but is not limited to Modifieds and Late Models 46mm 1 81 diameter steel sealed monotube gas pressure shock e Converts to coilover applications e Plated for durability and rapid heat dissipation Bilstein s famous consistent fade free performance e Custom valving is available for an additional fee Available in 7 and 9 strokes Model Extended Length Collapsed Length o Z 20 00 13 14 997 23 44 14 94 Available in these standard valvings Example 7Z 3030 or S9Z 3030 1090 3040 4555 5570 6065 8040 2020 3050 5030 6010
7. longer it takes for the chassis to return to the static ride height Compression damping controls only the oscillation of the car s unsprung weight Therefore it is normal to use less compression damping than rebound damping The exception occurs when we choose to slow the downward movement on a r H a Ld Er A i 7 E particular corner of the car to mimic the effect of a stiffer spring Here are some guide lines to use when shock tuning your chassis at the track or making the best decisions during initial set up We are making the assumption that you have removed as many variables as possible and are using the best combination of springs weight wheel spacers tire compound stagger etc Utilizing the Think Track below study the following list of suggestions These are not rules not even rules of thumb but they are tendencies that are more often true than not when racing late models and modifieds on asphalt or dirt surfaces THNK TRACK WHAT TOU WANT THE GAR TO DO FROM ENTRY TO EXIT JUST THINK IT THROUGH b b ALL YOU HAVE TO DO 15 DETERMINE 5 Tahe Shocting the Gr at the Track If your car is Loose Oversteer from 0 to 90 e Increase compression rate on front Decrease rebound rate on rear or only on left rear Tight Understeer from 0 to 90 Decrease compression rate on front or only on right front Increase rebound rate on rear or only on left rear When a
8. with schrader valve and circlip rod guide e Rebuildable shock can be assembled and disassembled for rapid repair or valving change Hard anodized for durability Valve stacks and valving kits available separately Available with linear or digressive piston Every part of the ASN shock is available separately for economical repair e World class performance in an aluminum shock at an economy price e Bilstein s famous consistent fade free performance e Optional adjustable shaft compression canister e Optional composite wear sleeve available to protect shock tube Part No Description Extended Length Collapsed Length B46 ATAL4 ATAD4 4 00 stroke 14 21 10 45 B46 ATAL5 ATAD5 5 00 stroke 16 257 25s B46 ATAL6 ATAD6 6 00 stroke Onan 1260 B46 ATAL7 ATAD7 7 00 stroke 20 23 13 35 B46 ATAL8 ATAD8 8 00 stroke 22 20 14 70 B46 ATAL9 ATAD9 9 00 stroke 23 60 15 08 7ATAL Linear ATAD Digressive Optional coilover mounting kit hardware and gas fill tool are sold separately Part No B4 BOA 0000190 Part No 193000 Designed for but is not limited to Late Models Super Late Models Sprint Cars Dirt Late Models and Big Block Modifieds 46mm aluminum body with extra large 60mm nitrogen compartment Coilover design e Available with or without base valve e 14mm piston shaft 60mm nitrogen compartment reduces rod pressure and keeps pressure more consistent to heat change
9. 7030 8060 2040 3060 5050 6040 7045 3030 3530 9599 6060 7060 jgressive Short Track Shock Nuntbering System EXAMPLE S 7 Z 60 60 BODY SERIES REBOUND COMPRESSION IMPORTANT Rebound and Compression are expressed in the industry standard 4 5 6 etc with a second digit to allow for a degree of dampening between whole numbers For example 50 means 5 55 means 5 1 2 SL Series Designed for but is not limited to Modifieds and Late Models 46mm 1 81 diameter steel sealed monotube gas pressure shock Linear style valving e Converts to coilover applications e Plated for durability and rapid heat dissipation Bilstein s famous consistent fade free performance Available in 5 6 7 8 and 9 strokes B46 0201 16 25 1125 6 B46 0202 18 25 12 00 ihe B46 0210 20 00 onus 8 B46 0203 22 25 14 00 9 B46 0207 23 44 14 94 Available in these standard valvings Example B46 0201H or B46 0203A A 230 78 D 220 120 H 300 100 o 230 100 B 208 72 E 270 90 L 180 95 U 200 180 C 162 55 F i7560 R 180 120 Linear Short Track Shock Numbering System EXAMPLE B 46 0210 300 100 REBOUND COMPRESSION REBOUND C9 12 Linear style valving e Converts to coilover applications 46mm 1 81 diameter steel sealed monotube gas pressure shock e Plated for durability and rapid heat dissipation Bilstein s famous consistent fade free performance Avai
10. E These recommended combinations can use Bilstein SZ SL SN ASN or BGT Series Take Apart shocks A customer valve charge will RECOMMENDED SET UPS be incurred when ordering sealed SZ or SL Series shocks not listed on pages 12 and 13 of this catalog NOTE These recommended combinations can use Bilstein SZ SL SN ASN or BGT Series Take Apart shocks A custom valve charge will be Basic Digressive Set Up Four Link incurred when ordering sealed SZ or SL Series shocks not listed on pages 12 and 13 of this catalog Basic Set Up VALVING 4040 5050 EE RF VALVING 3050 xus 4040 PART NO B46 0210C B46 0210C VALVING 162 55 HESAR E 162 55 PART NO B46 0207B L R R R B46 0207B VALVING 208 72 208 72 Side Bite VALVING 162 55 tel RE 162 55 162 100 or L R R R 230 72 or VALVING Dry Slick Digressive Set Up Four Link VALVING 3050 5030 LE RE VALVING 3050 M 3030 Basic Linear Set Up Four Link VALVING 300 100 300 100 LE RF L R R R VALVING 2080 208 72 Basic Set Up Swing Arm VALVING 6010 6010 INE R F VALVING 6010 L R R R 6010 Consult Bilstein Service and Valving Manual for build schematics for these valve stacks Momentum Track VALVING 162 55 162 72 or RE 208 55 L F VALVING 208 90 L R R R 208 90 Syracuse Set Up VALVING 300 78 ETE 270 78 L F VALVING 270 78 L R R R 230 100 Custom valved shock Option Custom valved shock NOTE All of the above set ups assume your chass
11. In Sec When the COB Digressive piston s check valve is installed on the rebound side there is less bleed and therefore more force created on the compression side Fill kit 192116 Disassembly collar B4 BOA 0000287 Product Disassembly collar Service manual 36mm assembly wrench 46mm assembly wrench Shock oil gallon Digressive valving kit Linear valving kit 14mm steel assembly needle 46mm slide on coilover kit 46mm aluminum coilover kit 46mm gas fill tool 36mm slide on coilover kit 36mm aluminum coilover kit 36mm gas fill tool 46mm composite wear sleeve ASN amp BGT Series 36mm composite wear sleeve ASB Series Linear valving kit B4 BOA 0000149 Part Number B4 BOA 0000287 194000 E4 X 1 Z002A00 193070 193031 B4 BOA 0000150 2 boxes B4 BOA 0000149 2 boxes E4 BOA 0000560 B4 BOA 0000117 B4 BOA 0000190 193000 B4 BOA 0000187 B4 BOA 0000257 B4 BOA 0000259 E4 RO0 Z016A00 E4 RO0 Z016A01 AK Series Specifications Front Rear Year Part Number Part Number Part Valving Mounting Types Extended Collapsed CAMARO Number Length Length 70 76 AK2072 AK1054 77 81 AK1053 AK1054 T Bar to Pin 13 48 8 60 82 92 AK1049 AK1050 EPs a ella 13 48 8 60 CHEVELLE AK1043 AK1044 T Bar to Pin 1348 8 60 AK3050F AK2020R T Bar to Pin 13 48 8 60 T Bar to Pin 13 48 8 60 AK3060F AK2040COBR AK4040F AK3030R AK5555F AK5030R AK6565F AK6010COBR T Bar to Cantilever 20 31 ve
12. L F R F PART NO S6G 4020 dii S6G 4020 Basic Set Up Asphalt PART NO 6G 4020 S66G 3535 LE RF Basic Set Up Dirt PART NO S6G 3010 S6G 1030 EFE able L R R R PART NO S6G 3010 S6G 3010 Basic Set Up Asphalt PART NO S6G 3535 S6G 3535 L F R F PART NO S6G 6020 L R R R S6G 4545 NOTE All of the above valving recommendations utilize our S6G Series Mini Racing shock Consult page 10 for the extended length and collapsed length for this product If your car requires a longer shock consider using the S7G Series shock also featured on page 10 Also consider moving the upper shock mounts up or down to accommodate either the S6G or S7G Series Mini Racing Shock 21 22 RECOMMENDED SET UPS Basic Set Up Dirt and Asphalt S6G 3535 or S6G 3535 or PARTNO S7G 3535 ER 976 3535 PART NO 7G 3535 AER S7G 3535 Suggested For Dry Slick Conditions Dirt S6G 3030 or S6G 2040 or PARTNO S7G 3030 EPER F S7G 2040 PART NO S7G 4020 its os S76 4020 Suggested For Heavy Tacky Conditions Dirt S6G 3535 or S6G 3535 or Pega 576 3535 LE RE 576 3535 L R R R PART NO S7G 5030 S7G 4545 Fast High Bank Asphalt S6G 3535 or S6G 4545 or PARTNO S7G 3535 LE RF S7G 3535 PART NO S7G 3535 ar md S7G 4545 NOTE All of the above valving recommendations utilize our S6G Series Mini Racing Shocks on the front and S7G Series Mini Racing Shocks on the rear Consult page 10 for the extended lengths and collapsed lengths fo
13. b cavitation This design is almost totally ineffective in preventing shock fade Bilstein s unique deflective disc valving system allows for exact valving of both compression and rebound movements Vb behh ons ie DA _ CITTITIITTIIIITITITITO Sere UPPER PRESSURE CHAMBER ANSWERING THE RACERS QUESTIONS WORKING PISTON Consists of patented deflective disc valve stack for precise performance Bilstein discs are spring steel which outperform stainless steel and produce longer life Piston uses powder metal technology OIL CHAMBER Special oil is INSIDE TUBE Damping forces are generated in the small diameter tube PISTON and VALVING The small diameter piston develops damping forces with check valves operated by The following are some commonly asked questions and their corresponding answers concerning Bilstein monotube gas pressure shock absorbers Q can buy twin tube shocks for less money than Bilstein shocks Why should spend the extra money As we point out in this catalog Bilstein shocks are fabricated from the highest quality components for long pressurized by the gas area onto the little coil springs Q Why is the shaft on a Bilstein shock always extended life performance Typically Bilstein shocks are only dividing piston to prevent j ops Tm cavitation foaming for consistent LOWER PRESSURE CHAMBER A As monotube gas shocks Bilstein shocks are under gas slightly more
14. car shock from products described on pages 10 11 17 or 18 of this catalog Set up recommendations are meant to provide base line numbers only for the chassis tuning process described on page 31 Tech Department 877 666 7662 30 Study the current Bilstein set up recommendations for your particular type of racing These combinations are tested and proven successful but due to the many variables that come into play under racing conditions it is to your advantage to have a basic understanding of how shock damping rates affect your lap times Adjustments can then be made with reason and understanding Simply stated shock absorbers convert the kinetic energy of the spring movements into heat This heat is then dissipated into the air through the shock tube or body In practical application shock absorbers are necessary to maintain maximum tire patch contact to the track as the car corners and negotiates irregularities on the race track surface Spring rates determine how far your chassis rolls pitches or squats Shock rates determine the length of time it takes for each of these movements to occur Rebound damping controls the movement of that part of the car s sprung mass that is stored in a compressed spring The rebound damping rate determines how long it takes for the compressed spring to return to the static ride height The larger the rebound figure the more the shock resists the compressed spring s effort to rebound and the
15. d NASCAR Type RECOMMENDED SET UPS NOTE These recommended combinations can use Bilstein SZ SL SN ASN or BGT Series Take Apart shocks A custom valve charge will be incurred when ordering sealed SZ or SL Series shocks not listed on pages 12 and 13 of this catalog Standard Basic Set Up 1 PART NO B46 0201E B46 0201E VALVING 270 90 anes 270 90 PART NO B46 0210 L R R R B46 0210 VALVING 208 90 208 90 Standard Basic Set Up 2 VALVING 325 90 220 120 ere MEE L R R R VALVING 6010 5030 NOTE Set Up 1 Forward Drive not an Issue Set Up 2 Forward Drive S an Issue All of the above set ups assume your chassis uses 5 stroke shocks on the front and 8 stroke shocks on the rear When ordering from your Bilstein dealer be sure to ask for the appropriate stroke for each corner of your chassis Soft Spring Big Bar VALVING CALL TECH DEPT CALL TECH DEPT EARE E Ren Hint VALVING CALL TECH DEPT CALL TECH DEPT Tech Department 877 666 7662 29 BILSTEIN 5 Late Modal Stock Super Late Moda Asat 3100 Ib 350 cfm Carb NASCAR Type RECOMMENDED SET UPS NOTE These recommended combinations can use Bilstein SZ SL SN ASN or BGT Series Take Apart shocks A custom valve charge will be incurred when ordering sealed SZ or SL Series shocks not listed on pages 12 and 13 of this catalog NOTE Set ups above indicate recommended valvings only Choose desired late model stock
16. d gas fill tool are sold separately Part No 193000 Part No B4 BOA 0000117 Designed for but is not limited to Sprint Cars Midgets Mini Sprints TQ Midgets Micro Midgets and Formula Cars Ultra lightweight 36mm aluminum threaded body provides faster heat dissipation e Famous Bilstein consistency and absolute fade free performance Racer rebuildable revalvable repairable and features adjustable rod pressure to suit any condition e Schrader valve counter sunk out of harms way Available in 6 7 and 8 strokes Can be built with linear standard digressive or compression only bypass digressive pistons e Optional composite wear sleeve available to protect shock tube Extended Length WS 20 08 22 46 Collapsed Length 11 44 12219 7 14 06 Part No Description B36 ATAL6 ATAD6 5 00 stroke 7 00 stroke 8 00 stroke B36 ATAL7 ATAD7 B36 ATAL8 ATAD8 Optional coilover mounting kit hardware gas fill tool and rod guide spanner are sold separately Part No E4 X 1 Z002A00 Part No B4 BOA 0000257 Part No B4 BOA 0000259 Li d o ELE EHE EHE HE HEEL EHE HEEL emmy c JU ELI ET TERT ET DE ET TT UE LITERE DE Le La A LL ET ST ETE UTE LIT a ED A hi HISELTITILEI TL eee 15 16 Abt p ALLE AL AREA AL LRL RH E LL UL ME Designed for but is not limited to Modifieds Late Models and Sprint Cars 46mm 1 81 diameter threaded aluminum body
17. eviewing the various set ups in this catalog you ll be ready to select the proper shocks for your specific race car Bilstein valving is precise Once you purchase your Bilstein shocks you can be certain they will perform at peak efficiency throughout their long life they will far outlast conventional shocks Bilstein shocks cost much less over the long run Bilstein shocks are the least expensive way to lower your lap times The companies that sell only twin tube low pressure gas shocks say their design outperforms monotube high pressure gas shocks How can know the truth Take a trip to a local discount department store that sells replacement shocks for cars and trucks that drive on the street You ll find shocks priced from about 8 99 to 29 99 All of the shocks on display will be twin tube shocks Their price reflects the fact that twin tube technology is relatively unsophisticated and very low cost to produce At a new car dealership you ll find that low cost base line cars and trucks are factory equipped with twin tube shocks that add very little to the cost of the vehicle Factory installed Bilstein shocks can also be found on Mercedes Benz Ferrari Porsche Toyota TRD Roush and many other high performance vehicles around the world Finally take a stroll through the pit area at a NASCAR Cup Busch Craftsman Truck CART IRL or Formula One race and you ll find not a twin tube shock in sight The top racing eng
18. expensive than twin tube brands Since fade free performance PISTON ROD Case hardened and highly polished steel strong enough to lift 20 tons ROD GUIDE and SEALS High pressure Viton inner rod guide seals ensure a perfect fit for consistent fade free damping and long life performance Most short track racers still run on the older style twin tube shocks But if you watch closely you ll find more of your competitors switching to the up to date monotube gas pressure shock absorbers Although there are other brands of monotube gas shocks making an appearance in America s pit areas Bilstein technology is so far ahead and so different that their performance cannot be equaled Bilstein s larger piston area produces instantaneous response to the slightest suspension movements Dead spots in a Bilstein are an impossibility Deflective disc valving in Bilstein shocks eliminate the need for check valves and tiny coil springs that cause inconsistencies in shock valving All Bilstein shocks of the same part number produce with little variation the same damping forces In other OUTER TUBE This is a reservoir to store oil displaced by the shaft on the compression stroke OIL RESERVOIR By storing oil in the outside tube heat dissipation is slowed more than the monotube shock design even if the outer tube is aluminum words when you bolt on a Bilstein you know what shock valving is on your car Shock absorber perf
19. ineers in the world always use monotube gas shocks By searching out the facts you will know the truth and the truth will make you faster Wir Shock absorbers produce damping force by forcing oil under pressure through holes in the piston Shock damping forces increase as the vertical velocity of your suspension increases In other words when the shock s piston speed through the oil increases so do the damping forces Shock dynamometers measure the amount of damping force generated by the piston as it accelerates and decelerates from a dead stop to a chosen peak velocity usually 10 to 12 per second The forces are normally depicted in the form of a graph that plots shaft velocity in inches per second on the horizontal and damping forces in pounds on the vertical Compression forces are normally expressed from zero going up and rebound forces from zero 4 0 6 0 Velocity In Sec This graph was generated by a Bilstein U37T linear piston using 36 4 mm diameter cover plates resulting in a high bleed or high frequency style short track linear valving 400 0 2 0 4 0 6 0 8 0 10 0 Velocity In Sec Our standard digressive valvings can be built with a wide range of bleed patterns The one shown here is a very high bleed valving typical of one that would be used on the rear suspension to promote traction rce Lbs 4 0 6 0 Velocity In Sec
20. is uses 7 stroke shocks on the front and 9 stroke shocks on the rear When ordering from your Bilstein dealer be sure to ask for the appropriate stroke for each corner of your chassis 21 28 RECOMMENDED SET UPS NOTE These recommended combinations can use Bilstein SZ SL SN ASN or BGT Series Take Apart shocks A custom valve charge will be incurred when ordering sealed SZ or SL Series shocks not listed on pages 12 and 13 of this catalog 1 4 Mi to 3 8 Mi Shallow Bank Low Speed Corner Entry VALVING 270 90 270 90 LEIRE VALVING 6010 ES 5030 1 4 Mi to 3 8 Mi Banked High Speed Corner Entry VALVING 270 90 180 120 PENRE L R R R VALVING 6010 6010 3 8 Mi to 1 2 Mi Shallow Banked High Speed Corner Entry VALVING 270 90 180 120 ES ER AREE VALVING 6010 ESSE 5030 3 8 Mi to 1 2 Mi Banked High Speed Corner Entry PART NO 7Z 6060 S72 6060 Peo ee PART NO S92 5030 Eins S92 5050 1 2 Mi High Banked Very High Speed Corner Entry PART NO 7Z 6040 7Z 6040 LENIRE PART NO S92 6040 uisus S92 6040 NOTE All of the above set ups assume your chassis uses 7 stroke shocks on the front and 9 stroke shocks on the rear When ordering from your Bilstein dealer be sure to ask for the appropriate stroke for each corner of your chassis Soft Spring Big Bar VALVING CALL TECH DEPT T CALL TECH DEPT FARE L R R R VALVING CALL TECH DEPT CALL TECH DEPT Tech Department 877 666 7662 Asphalt Modifie
21. lable in 7 and 9 strokes Stroke Extended Length Collapsed Length Js 20 00 13 14 s 23 44 14 94 Linear cross reference list F4 BE5 F590 MO S7L 2 5 2 58 150 150 F4 BE5 F591 MO S7L 3 48 175 225 F4 BE5 F592 MO S7L 3 58 175 275 FA BE5 F593 MO S7L 3 5 18 200 75 F4 BE5 F594 MO S7L 3 5 1 5S 200 100 F4 BE5 F595 MO S7L 4 28 225 125 F4 BE5 F596 MO S7L 4 48 225 225 F4 BE5 F597 MO S7L 5 1 58 275 100 F4 BE5 F598 MO S7L 5 58 275 275 F4 BE5 F599 MO S7L 6 28 325 125 FA4 BE5 F600 MO S9L 1 5 1 5S 100 100 FA BE5 F601 MO S9L 1 5 2 58 100 150 F4 BE5 F602 MO S9L 1 5 3 58 150 150 F4 BE5 F603 M0 F4 BE5 F604 M0 F4 BE5 F605 M0 F4 BE5 F606 M0 F4 BE5 F607 M0 F4 BE5 F608 M0 F4 BE5 F609 M0 FA BE5 F610 MO FA BE5 F611 MO F4 BE5 F612 M0 F4 BE5 F613 M0 F4 BE5 F614 M0 F4 BE5 F615 M0 S9L 1 5 5S 100 275 S9L 2 2S8 125 125 S9L 2 5 2 58 150 150 S9L 3 3S 175 175 S9L 3 48 175 225 S9L 3 5S 175 275 S9L 3 6S 175 325 S9L 3 5 18 200 75 S9L 3 5 3 5S 200 200 S9L 4 1 5S 225 100 S9L 4 48 225 225 S9L 5 1 5S 275 100 S9L 5 5S 275 275 4 Bar Dirt Modified Race Shock Kit Package Perfect for dialing in your car Everything is included the shocks instructions and recommended set ups Kit includes 10 SLS Series shocks Dirt Modified Race Shock Kit F4 SE7 G696 M0 SLS Series N rripering System EXAMPLE S 7 L o COMPRESSION
22. nalyzing corner entry or deceleration handling realize that the chassis is affected by Compression rate in front Rebound rate at rear Bilstein shocks are famous for their superior performance on very rough asphalt or rutted dirt tracks You may need to choose a shock with more compression damping than found on our set up sheets under extreme rough track conditions We have included this section in our catalog to broaden your understanding of the function of shock absorbers and to show you the effect they have on handling Loose Oversteer from 90 to 0 e Decrease rebound rate on front Decrease compression rate on rear Tight Understeer from 90 to 0 Increase rebound rate on front Increase compression rate on rear or only on right rear When analyzing corner exit or acceleration handling realize that the chassis is affected by Rebound rate in front Compression rate at rear Keep in mind that there are many adjustments on your chassis other than shock absorbers The oversteer understeer balance may be affected by stagger tire compound wheel spacing spring rates sway bar panhard and others Shocks can be used to fine tune your chassis to gain that last few tenths of a second on the track If you have any questions contact our technical department at 877 666 7662 31
23. ormance fades away when the oil in the shock cavitates foams Conventional twin tube shocks that are called gas charged contain a small plastic bag holding a minuscule amount of gas under a small amount of pressure This design while low in cost to manufacture is ineffective on the track Under extreme G forces on rough tracks and in high heat conditions gas charged twin tube shocks do not resist cavitation as effectively as monotube gas pressure shock absorbers This is the reason that all NASCAR Indy Car Formula One and Off Road racers long ago discarded twin tube shocks in favor of monotube gas pressure technology pressure to deliver the most responsive valving for ultimate control This pressure called the gas reactive force and Bilstein s perfect internal seals force the shaft to be extended Is the car more difficult to scale with Bilstein shocks Bilstein shocks have no effect on the results as you weigh the four corners The gas reactive force in Bilstein shocks may raise your car s ride height slightly Simply adjust the chassis downward to the desired ride height Does Bilstein offer specific applications for the various dirt and asphalt racing series As the set up charts in this catalog indicate Bilstein has shocks specifically valved for both dirt and asphalt surfaces of various track lengths Are Bilstein shocks difficult to understand and use After r
24. r these products If your car will not accommodate shocks of these dimensions consider moving your upper shock mount up or down to the desired static center to center dimension RECOMMENDED SET UPS With Wing Basic Set Up Dirt PART NO 7G 3535 7G 3050 EE ras ERARA PART NO W Valve Stack S8G 5050 S8G 5050 With Wing Dry Slick Track Dirt PART NO S7G 3050 S7G 3050 EE MERE I Pala PART NO W Valve Stack S86 4040 S86 4040 With Wing Heavy Tacky Track Dirt PART NO 976 5555 S7G 4545 OT DERE R R R PART NO W Valve Stack S86 7035 S8G 5555 With or Without Wing 1 4 To 3 8 Mi Average Bank Asphalt PART NO W Valve Stack 7G 5555 ue lee 7G 5555 L R R R PART NO W Valve Stack S8G 5050 8G 5050 With or Without Wing 3 8 to 1 2 Mi Fast High Bank Asphalt PART NO W Valve Stack 7G 5555 7G 5555 Lam able L R R R PART NO W Valve Stack S86G 5555 S8G 5555 NOTE It is assumed on this set up sheet that the car utilizes 7 stroke shocks in front and 8 stroke shock in the rear Before purchase measure shock mounts center to center at static ride height Check the extended and collapsed measurements on catalog page 10 to determine if your car needs S6G S7G or S8G series shocks S8G s normally replace competitor s 9 stroke shocks 23 RECOMMENDED SET UPS Base Line Set Up PART NO PART NO Dry Slick Track Conditions PART NO 9Z 5030 or L R PART NO Stock Mourt Stock Car
25. s e Bilstein s famous consistent fade free performance e Racer rebuildable and revalvable e Hard coat anodizing for strength and durability Coarse threads on shock body for added strength and ease of coil spring adjustment e Optional composite wear sleeve available to protect shock tube e Optional adjustable shaft e Available in 7 and 9 strokes Available BGT Base Valve Part No Description B46 60BG7C Extended Length Collapsed Length 7 00 stroke 2s 14 75 B46 60BG9C 9 00 stroke 25 25 16 75 Optional coilover mounting kit hardware and gas fill tool are sold separately Part No B4 BOA 0000190 Part No 193000 Ts La Teh ak ell hi a eel deh i NA 17 18 B46 60BG8 e 60mm gas chamber Increased oil volume Base valve option e Screw in rod guide B46 GN3 e 46mm body e Screw in rod guide B46 GN3 B46 60BG8 Rebuildable Shocks for NASCAR Classes e Aluminum construction Linear digressive and RBT piston available e Adjustable shaft option e Aluminum construction Linear digressive and RBT piston available e Adjustable shaft option Part No Extended Length B46 60BG8 22 60 B46 GN3 24 40 Double Adjustable Shaft e Excellent for pavement and dirt racing e 10 position rebound knob 10 position compression knob e Uniformed adjustment with rebound and compression tuned independently e Shaft utilizes new 1 to 1 billet linear piston
26. s BGT Series Late Models Super Late 46mm diameter threaded 17 Models Sprint Cars aluminum body with 60mm Pado RO ay as one aa Dirt Modified Set Ups Dirt Late Models and nitrogen compartment 14mm i Big Block Modifieds piston shaft rebuildable PAJO 27 uoce sari super Dirt Late Model Set Ups Page 28 I M C A Type Modified Asphalt Set Ups P Big Track Rebuildable shocks B46 60BG8 46mm aluminum 18 Page 29 Asphalt Modified Set Ups Series for NASCAR classes body with 60mm gas chamber linear digressive or RBT piston Page 30 Late Model Stock Super Late Model Asphalt Set Ups screw in rod guide Page31 How To Shock Tune Your Chassis Trouble Shooting The Car At The Track B46 GN3 46mm aluminum B es body linear digressive or RBT For Complete Information Contact piston screw in rod guide optional adjustable shaft Aftermarket amp Motorsports East Aftermarket amp Motorsports West Mooresville NC Poway CA Phone 877 666 7662 Phone 800 537 1085 bilsteinUS com 3 seat TEJ Mondtube vs Twin Tube SIE ti Jr 3 Bilstein shocks don t fade Your chassis will handle as good at the end of the race as it did at the start 1 Because the valvings are consistent your There are two basic types of shock absorber used in today s short track racing the conventional set ups will be more precise twin tube reservoir shock and the monotube gas pressure shock pioneered b
27. tes to caver appligatiohs Page 8 9 AK Series Mounting Types and Specs AK Packages an aai vafs Page 10 SG Series Page 11 SZ Series SZ Series Modifieds 46mm diameter sealed steel 11 13 SL Series Late Models and body converts to coilover Page 12 SL Series SLS Series Stock Cars Hobby Stocks applications off the shelf i Pinos Page 13 SLS Series NEW Page 14 SN amp SNS Series SN Series Modifieds Late Models 46mm diameter steel body 14 Page 15 ASB Series SNS Series and Sprint Cars aluminum billet cap with schrader valve linear or Page 16 isses ASN Series digressive piston rebuildable Page 17 BGT Series Page 18 Big Track Series ASB Series Sprint Cars Midgets Ultra lightweight 36mm aluminum 15 Mini Sprints TQ Midgets body sealed non coilover design Page 19 Adjustable Shafts and Compression Canister Micro Midgets and or rebuildable threaded body Formula Cars models available Page 20 asus Dwarf Car Set Ups Page 21 Micro Midget and Modified Midget Set Ups ASN Series Modifieds Late Models 46mm diameter threaded 16 Ter vi Pes ol miel aedi To Page22 Midget and Mini Sprint Set Ups valve and circlip rod guide linear or digressive piston rebuildable Page23 Sprint Car Set Ups c M Page24 Stock Car Hobby Stock Set Ups Page 25 I M C A Type Modified Dirt Set Up
28. x T Bar to Cantilever ACh ie eae T Bar to Cantilever 2031 loai T Bar to Cantilever 20 31 194 MONTE CARLO BUICK REGAL T Bar to Cantilever 2E eis 73 88 AK1043 AK1044 T Bar to Cantilever 20 31 Sahil FULL SIZE FORD Strut 19 98 14 41 79 93 AK1195 AK1196 Pin to Cantilever 18 90 11 81 MUSTANG except SVO 87 93 AK1199 AK1198 Race Shock Kit Packages These shock kit packages are perfect for dialing in your car Everything is included the shocks instructions and recommended set ups Kits include 7 AK Series shocks Dirt Stock Car metric F4 SE7 F565 MO T Bar to Pin BRIAN 95 T Bar to Cantilever 18 62 1128 T Bar to Pin ee 9 21 T Bar to Pin 20 39 2I T Bar to Pin 13 86 9 21 Cantilever to Pin 19 80 12 94 Pin to Eye 20 10 12 64 Sport Modified metric F4 SE7 F566 MO Strut 21 28 15 94 T Bar to Pin 14 02 8 92 All valvings at 10 sec NOTE See page 8 for mounting types 3581 219 linear 1314 206 digressive AK3060F 110 233 digressive AK4040F 197 154 digressive 245 190 digressive 325 220 digressive AK1044 254 141 linear AK2020R 70 70 digressive AK2040COBR 70s 140 digressive AK3030R 158 117 digressive AK5030R 300 120 digressive AK6010COBR 185 70 digressive AK1049 196 125 linear 213 118 linear 393 172 linear 3241 112 linear Mounting Types Extended and Compressed Lengths l 565 164 linear T Bar to
29. y Bilstein 2 Bilstein s larger piston and deflective disc valving develop control force when you need it at the slightest movement pis of the suspension You ll get A e weight transfer when you F 4 Bilstein shocks are rugged They last for years and are rebuildable and revalvable NITROGEN GAS AREA Puts shock oil under pressure to totally prevent cavitation foaming and shock fade AIR SPACE When the shock is mounted upside down to reduce unsprung weight air space resides over base valves making eventual shock fade a certainty 5 When the advantages of Bilstein gas pressure shocks are tallied up you will DIVIDING PISTON WITH O RING Separates gas and oil and is moveable to accommodate rod movement into the tube Bilstein shocks are not gas oil emulsion shocks BASE VALVES Allow oil to exit the inner tube when displaced by the shaft on the compression stroke and need it better control have spent less money on shock absorbers under braking and your tires will stay on the track through the rough spots and collected more money at the pay window to re enter on rebound stroke MONOTUBE SHOCK BODY Inside wall has finished tolerances of an engine cylinder Outer surface is cadmium or nickel plated for durability Single tube design dissipates heat more effectively than twin tube GAS BAG A plastic bag containing gas under very low pressure is said to absor
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