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8100 Series

From Formula Vee to Indy Car, the 8100 Series double adjustable dampers are now an industry standard. The light weight and hand built quality of these dampers puts them at the top of their class. The 8100 Series dampers are available in lengths from 10.00" through 24.00" in 1/2" increments making them available for most forms of auto racing.

The category, double adjustable, comes from the fact that the compression and rebound damping is adjusted externally instead of removing the damper from the car. The compression adjuster is located on the remote reservoir. 

The rebound adjuster is located in the eyelet at the base of the shaft. The main valving, located inside the damper, may also be altered in a matter of minutes, by removing the damper from the car.


8100 Series Compression Adjuster

From Formula Vee to Indy Car, the 8100 Series adjuster offers a wide range of compression adjustment for the serious racer. The method in which the PENSKE 8100 adjusts compression forces is simple. When the damper is put into a compression condition, the fluid being displaced by the shaft 

entering the body must pass through the compression adjuster drum and the selected orifice located in the remote reservoir. As the knob is rotated, a drum inside the compression adjuster is rotated, aligning the chosen orifice within the direct flow of oil into the remote reservoir. The adjustment knob is numbered, from one to six. By clicking to the number one position, the adjuster is set at full soft (utilizing the largest hole in the compression adjuster drum). The number six position on the knob denotes a full hard setting (oil flow is greatly restricted). This method of adjusting compression damping is ideal for most forms of racing, especially those having higher shaft speeds and displacements. The redesigned orifices make every adjustment have a noticeable "feel" and have increased the range of adjustment. At higher shaft velocities, oil passes through the orifice in the compression adjuster drum and gets a point of "packing-up". Instead of packing-up and increasing the damping force, a valve in the compression adjuster housing allows for the oil to bleed off, making for more linear force curves.



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