AFCO 3840-1 Swing Arm Dragster Coil-Over Shock-Twin Tube, 4 In. Stroke
Universal Fit, Twin Tube Shock Type, Aluminum Shock Body Material, 4.00 Shock Stroke
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These are specifically valved for high horsepower applications. Both small tire and big tire cars can better control the “hit” to the tire with this series of shocks. Don’t “drive thru” your shocks with that big power — choose this series of shocks for the ultimate control off the line. Mount the shock upside-down for easier access to the rebound adjuster.
- Body Mount: 1/2" I.D. Bearing (1.060" wide)
- Shaft Mount: 1/2" I.D. Bearing (1.060" wide)
- Double Adjustable - broad range of adjustment
- Big Gun Valving - specifically valved for high horsepower applications
- Shock of choice for Swing Arm Dragsters
- Great for BIG or SMALL tire door slammers
- Large piston provides superior launch stability
- Gas pressure eliminates cavitation and allows shock to recover faster
Includes coil-over kit. Coil spring NOT included.
Item Details10.9" Comp, 14.9" Ext, 8" spring height
12.25"-13.25" @ ride height
Designed for the following classes:
- Outlaw 10.5
- Top Sportsman
- Big Dog
- Super Quick
- Pro Mod
- Pro 5.0
- Drag Radial & Others
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Q & A
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.
Speedway Motors employee Pat O. talks about shock ends.