Single Adjustable Base Valve Shocks

Genesis Adjustable Instructions Sheet

The GXB2 is a mono - tube single adjustable base valve it's available in 5" - 6" - 7" - 8" and 9" stroke and any possible valving or split valving.

The GXB2 has a fully anodized aluminum body with a large built-on gas reservoir. This increases the volume of gas the shock will hold, which lowers the unwanted increase in rod pressure that comes with stroke. It also has a base valve that allows the shock to be effectively operated from zero to 300 PSI gauge pressure.


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 GXB2 has the largest true rebound or compression range of adjustments. 3 to 8 on Rebound or Compression is standard, Also available in other ranges. Both adjustments are thru the rod.

  • 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.

  • Double checked  low-speed valving design with .00004" precision components.

  • Proprietary EDO force velocity profiles.

  • Largest 75mm built on gas reservoir.

  • Large 48mm bore for maximum control and reduction of rod pressure buildup.

  • 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.
  • Has a base valve that allows the shock to be effectively operated from zero to 300 PSI gauge pressure.
  • Double checked  low-speed valving design.
  • 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


  • Much more traction than standard shocks especially in slick conditions.

  • More driver feel which results in better feedback to adjust to ever changing track conditions.

Standard Eyering Lengths
Series Extended Length Compressed Length  Travel Weight
GXB2 - 5" 15 3/4 11 1/4 4 1/2 inch #3.0
GXB2 - 6" 17 3/4 12 1/4  5 1/2  inch #3.2
GXB2 - 7" 19 3/4 13 1/4 6 1/2 inch #3.4
GXB2 - 8" 21 3/4 14 1/4 7 1/2 inch #3.6
GXB2 - 9" 24 3/4 15 3/4 9 inch #3.8

If more Extended length is needed as in a shock extension it MUST be specified on shock when ordering like below

Extended Lengths
Series Extended Length Compressed Length  Travel
GXB2E5 16 3/4 12 1/4 4 1/2 inch
GXB2E6 18 3/4 13 1/4  5 1/2  inch
GXB2E7 20 3/4 14 1/4 6 1/2 inch
GXB2E9 25 3/4 16 3/4 9 inch

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.

To Adjust the Compression or Rebound

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


Rebound Side Adjustment

Compression Side Adjustment

Coil Over Kit for GXB2 series with 2 1/2 springs - part number 3500

Now Available!

Remote Adjuster Cable For Adjustable Shocks.

GX Series Catalog - Now Available !

Genesis Racing Shocks Catalog

Genesis Racing Shocks Instruction Sheets

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Genesis Offers  Camair Products

Coil Over Springs

2011 Hyperco Complete Catalog..Click here

Hyperco Duel Rate Spring Chart

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Genesis Shocks

5020 Old Ellis Point - Suite 200

Roswell, Georgia  30076


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