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800.979.0122

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AFCO 3840BG Big Gun Rear Twin Tube Coil-Over Shock, 4 Inch Stroke

SAME DAY SHIPPING! Most orders ship within 24 hours.

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Specs
Sold in Quantity:
Each
Shock Type:
Twin Tube
Shock Body Material:
Aluminum
Adjustability:
Double Adjustable
Shock Stroke:
4
Shock Body Type:
Threaded
AFCO 3840BG Big Gun Rear Twin Tube Coil-Over Shock, 4 Inch Stroke

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

The Big Gun Double Adjustabe T2 Twin Tube shocks 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.
  • Double Adjustable - broad range of adjustment
  • Big Gun Valving - specifically valved for high horsepower applications
  • Great for BIG or SMALL tire door slammers
  • Shock of choice for 4-Link Dragsters
  • Large piston provides superior launch stability
  • Gas pressure eliminates cavitation and allows shock to recover faster
  • Body Mount: 1/2" I.D. Bearing (1.060" wide)
  • Shaft Mount: 1/2" I.D. Bearing (1.060" wide)

Includes coil-over kit. Coil spring NOT included.

Item Details

10.9" Comp, 14.9" Ext, 8" spring height
12.25"-13.25" @ ride height

Application

Designed for the following classes:

  • Outlaw 10.5
  • Top Sportsman
  • Big Dog
  • Super Quick
  • Pro Mod
  • Pro 5.0
  • SSO
  • Drag Radial & Others

Customer Reviews

This product has no reviews.

Product Q&A

1 questions : 1 answers

1 answers

for what vehicle weight? what is the valving?

September 05, 2011

for what vehicle weight? what is the valving?

Answers

September 08, 2011
John
These shocks are available in 4 mount lengths to accommodate multiple applications. They are double adjustable meaning that you dial in the appropriate dampening on both compression and rebound. They do not come with the springs which are ordered in the appropriate length for the shock ordered and spring length does vary in the different mount lengths. With the adjustable valving and multitude of available spring rates these shocks work on the lightweight roadsters up through the blown big block Tri-5’s. Check your available mount length prior to ordering to insure correct length of shock.
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Afcoil Spring Rate Guide (GIF)

AFCO 3240BG Big Gun Rear Coilover Shock-Canister Series, 4 Inch Stroke
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The Big Gun Series Double Adjustable Monotube shocks 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
  • Great for BIG or SMALL tire door slammers
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  • 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 Details

10.2" Comp, 14.2" Ext, 8" spring height
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AFCO Eliminator Twin Tube Adjustable shocks are built specifically for drag racing. Using advanced onboard diagnostics, AFCO developed the Eliminator Series to precisely control your race car at every point on the track. With the easy-to-use, repeatable "click" settings, this shock will give you unsurpassed traction.

Single (Rebound) Adjustable shocks are an economical alternative that gives you the ability to adjust rebound dampening control without affecting the compression dampening characteristics of the shock.

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How to Choose Shock Length (GIF)

Note: Coil spring NOT included.

Item Details

Single Adjustable
9.90" Comp, 12.90" Ext, 7" spring height
10.75"-11.25" @ ride height