Xtreme Double Adjustable Canister Shock.

Genesis Adjustable Instructions Sheet


The GX4 is a mono - tube double adjustable it's available in 5" - 6" - 7" - 8" and 9" stroke and any possible valving or split valving. The GX4 has a fully anodized blue aluminum body with a large remote gas reservoir.


The GX4 is completely rebuildable - revalvable.


More Stability and Control

More Traction


GX Piston Features.
Increased counter-pressure pre-load enabled.
Directional differential annular design.
Improved low speed characteristics.
Precision pressure control.
Decreased high speed restriction.

Improved high acceleration characteristics.

Improved flow.

Improved profile consistency.

Anodized aluminum.

Resistance to micro-fissure.

  • The GX piston is available in Digressive, Linear,  Progressive, Linear/Digressive, High Flow and Double Digressive.

  • Unique proprietary WNF synthetic shock absorber fluid.

  • Proprietary DGP design, keeps pressure low while supporting compression valve values.

  • Proprietary EDO force velocity profiles.
  • The GX4 has the largest true rebound and compression range of adjustments.

  • Large 48mm bore for maximum control.

  • Largest remote gas reservoir.

  • High strength 10 turns per inch external threads with adjusting nut with locking grooves.

  • Replaceable positive stainless steel no-drag scraper to keep any dirt and debris out.

  • Hollow chrome-moly shaft.
  • Low friction Teflon lined self lubricating 1/2 inch bearing on both ends.
  • Double checked  low-speed valving design with .00004" precision components.
  • Completely independent rebound and compression adjustment.
  • If more Extended length is needed as in a shock extension it MUST be ordered on shock when ordering like below

Special GX Series Shocks for Dirt Late Models

GX39LR2 - Left rear, Double adjustable for when 1 shock per wheel is required or needed.

GX437D1 - Right front, Double adjustable with remote canister with very high rebound adjustments.

Above is used with stacked springs for more spring adjustment.

GX39RR1 - Right rear, Double adjustable Base Valve with remote canister.

GX4QCB39RR1 - Right rear, Double adjustable Base Valve with one non-base valve and one base valve canisters remote canisters.


Extended Length

Compressed Length














26" 17" 9" #5.2

You must set nitrogen pressure before use

As all Adjustable Shocks are shipped without  nitrogen.


Do not force pointer beyond the number range,

 As this may result in internal damage.

The GX4 common part numbers for Dirt

7" Stroke Left Front= GX437LF1

7" Stroke Big Rebound = GX437BRD

7" Stroke Real Big Rebound = GX437D1

9" Stroke Right Rear = GX439RR1

9" Stroke Left Rear = GX439LR1

9" Stroke at 25 3/4 ext length = GX439ELR1

To Adjust the Compression or Rebound

To Adjust: Turn knob until arrow points to desired valve setting.

Compression Side Adjustment

Rebound Side Adjustment

Now Available!

Remote Adjuster Cable For Adjustable Shocks.

GX Series Catalog - Now Available !

Genesis Racing Shocks Catalog

Genesis Racing Shocks Instruction Sheets

Shock Parts and Accessories

Genesis Racing Shocks Apparel

Genesis Offers  Camair Products

Coil Over Springs

2011 Hyperco Complete Catalog ..Click here

Hyperco Duel Rate Spring Chart

 Xtreme Steel Shock Series


 Xtreme Aluminum Shock Series


 GD|GS0||GS1|GS2|GS3| G0|G1|G2|G3|G4|G5|G6|G7|G8 Shock Series.

GSB1|GSB2|GSB3|GB1|GB2|GB3 Base Valve Shock Series

Building Winners And Champions One Race At A Time!

Genesis Shocks

5020 Old Ellis Point - Suite 200

Roswell, Georgia  30076


Fax 678-659-9457

e - mail - Genesisinfo@Genesisshocks.com

Copyrighted 2006-2016