Bilstein Aluminum Threaded Gas Shock, 9 Inch Stroke, Comp/Rebound: 4/4
Dirt Late Model, Legends, Midget, Modified, Pavement Late Model, Sprint Car, 4 Rebound Valving
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- 46mm (1.81") diameter threaded aluminum body
- Includes Schrader valve and circlip rod guide
- 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
- World class performance in an aluminum shock at an economy price
- Bilstein's famous consistent, fade-free performance
- Designed for, but not limited to Modifieds, Late Models, & Sprint Cars
Note: With mono-tube gas shocks, you have a longer compressed length. So if you've been running a 9" Pro, Carrera, etc., you need to go to an 8" Bilstein.
Bilstein Shock Numbering System
Example: SN 7 A 20 40
- 7 - Stroke in inches (Comp. length subtracted from Ext. length)
- A - Aluminum threaded body shock
- 20 - # Rebound damping (first # in sequence)
- 40 - # Compression damping (second # in sequence)
Note: Rebound and Compression are expressed in the industry standard, 4, 5, 6 etc. with a 2nd digit to allow for a degree of dampening between whole numbers. For example: 50 means 5, 55 means 5-1/2
- Compressed Length: 15.08"
- Extended Length: 23.6"
What's In The Kit
Bilstein ASN Base ShockPart # 213SN9AQty x 1
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Q & A
Tim talks about what options we have for hot rod shocks.
Speedway Motors employee Pat O. talks about shock ends.
Call Our Experienced Shock Techs For Details At 800.979.0122. Shipping Information ... Have Your Shocks Dyno Tested To Ensure Optimum Performance!
How to remove shock rod end and install bump rubber/bump cup.
AccuAir and Speedway Motors team up to bring you a video series explaining the basics of air suspension. Watch these videos to get a better understanding of air suspension.
Tim demonstrates a quick and easy solution to removing dents in your sprint car torsion tube. Check out this video for a simple fix to a common problem.