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by GSpeed
Original price $3,599.00 - Original price $6,350.00
Original price
$3,599.00 - $6,350.00
Current price $3,599.00


Gspeed will contact you via email or phone to go over your cars build and purpose to verify spring rates & additional information needed prior to shipping. 

Over the last 6 years, GSpeed has invested heavily into the corvette performance and racing market. As Aero loads and the need to ride over curbs increased, so did the need for a proper damper engineered specifically for the C5/C6 platform.

After testing many off the shelf shocks, we quickly realized that what we wanted didn’t exist. Enter Penske. Penske shocks are a clean slate for an engineer, and a large one at that.  We weighed every unsprung part of the suspension and calculated aero loads from wind tunnel testing to determine what we needed as a baseline. After a few revisions and moving the location of the knee, we had what we felt was the best shock package that would be 99% at 99% of the tracks for Corvettes with or with out aero, between 2900 and 3400lbs.

This same shock package helped power the GSpeed TT3 C5 to the regional NASA Texas lap record at COTA, and then the NASA National TT3 championship at COTA for 2018. This was then followed up with NASA National ST2 championship at Mid-Ohio with the same car and suspension package, and sense then, many customer wins & championships added to the list. 

While many rush to bring their products to market, we test and validate our parts to ensure our customers highest satisfaction. With tests conducted at over 20 different tracks in the last 24 months from some of the fastest C5 and C6 racers, you can rest assured you have  the best shock package to fit the racers needs. Have something not normal? Remember that BIG clean slate? We can valve to meet your demands.


We offer these in Non adjustable, single adjustable rebound, and Double adjustable bump and rebound with canisters. We also offer Triple Adjustable, however please call to connect with a specialist regarding these, 

  • 600-800lb/in eibach springs for maximum clearance to tie rod. Min spring rate 500, max 850 before revalve is needed at 3100lbs race weight.
  • Upper shock clevis mounting
  • Billet lower rear fork with provision for rebound adjuster
  • 300M lower front pin mount with eyelet machined for rebound adjuster. 
  • Completely serviceable by any reputable shock rebuilder, here at GSpeed, or Penske directly.
  • Make sure to select your model car, model of shock you would like, as well as the spindle being used on your car to make sure your kit is built properly.