Non Adjustable Base Valve Shocks

Non Adjustable Base Valve Shock Absorbers

The GB1 is a mono-tube, non-adjustable gas shock absorber.  It's available in 5" - 6" - 7" -8" and 9" stroke and any possible valving or split valving.  It 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.



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

  • Largest 75mm built on gas reservoir.

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

  • 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.
  • The finest high quality, high viscosity index, 100% Synthetic Shock absorber oil virtually 0 thermal expansion.
  • 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.

The GB1 is completely rebuildable, and revalvable.

Coil Over Kit for GB1 series with 2 1/2 springs - part number 3500

Series Extended Length Compressed Length  Travel Weight
GB1 - 5" 15 3/4 10 3/4 5 inch #2.6
GB1 - 6" 17 3/4 11 3/4 6 inch #2.8
GB1 - 7" 19 3/4 12 3/4 7 inch #3.0
GB1 - 8" 21 3/4 13 3/4 8 inch #3.2
GB1 - 9" 23 3/4 14 3/4 9 inch #3.4

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Coil Over Springs

2011 Hyperco Complete Catalog..Click here

Hyperco Duel Rate Spring Chart

 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

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Genesis Shocks

5020 Old Ellis Point - Suite 200

Roswell, Georgia  30076


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