Penske Racing Shocks

8975 In-Line Double Adjustable




Additional Information


The 8975 is the latest addition to Penske Racing Shocks successful shock line up. The most economical multi-adjustment shock, it utilizes all of the standard PRS parts that are known for quality and repeatability. All shocks are 100% hand built and dyno tested for the best performance and customer satisfaction. We stand by our products and routinely assist customers in getting the best performance from their shocks. The same components in the 8975 are used all over the world at the highest forms of Motorsport.

The 8975 series shocks are set from the factory at recommended starting settings for your application. They are pressurized and ready to go.

The Penske Advantage

  • Standard Penske 55mm bore size which allows use of wide array of piston types
  • Low friction shaft and piston seals
  • Hard anodized, 6000 series aluminum bodies and components for superior durability, performance, and repeatability
  • Hard chromed 4130 main shaft with rolled threads for strength, durability, and low breakaway friction
  • Durable ACME thread body that allows quick adjustment of spring preload (.100″ per turn)
  • Simple, in-line design for lightest weight and ease of installation
  • Winning heritage – Penske Racing Shocks continue to help our customers win races and championships in all forms of Motorsport
  • Made in U.S.A. – The 8975 has been 100% designed, machined, assembled, and tested for quality in the United States
Both compression and rebound have 40 clicks of adjustment. Compression will have around 150lbs of adjustment range, where rebound is dependent on type of valving. Typical rebound range is 250lbs-400lbs.
While we do offer two double adjustable shocks for many applications, the 8975 has limited stroke options. This is because the nitrogen reservoir is in-line with the shock, so you lose that area of stroke. Typically the 8975 will have anywhere from 1” to 1.75” less stroke depending on application.
Depending on the model, the 8975 can weigh anywhere from .5lbs to a full 1lb less than a similar remote double adjustable shock.

**Note: not all makes or models are available. Check the application chart to see which shock models are available for your bike. If you don’t see your bike listed, please contact us. We may be able to take your OEM or existing shock and make a duplicate.**

**Also note price may increase depending on model. Some models require fabrication of existing parts. For these models, additional labor is added. The application chart will show cost that will be added.**

**All shocks are hand built to order specifications.  Please allow a minimum of 10 business days for processing; however lead times may be much longer depending on seasonality.  For more information on specific product lead times, or if you require a specific delivery date, please inquire before ordering.**

Additional information

Weight 8 lbs
Dimensions 24 × 7 × 6 in


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