7000 Series-  Available as Rebound Adjustable
	8100 Series-  Double Adjustable
	8760 Series-  Available as 3-Way & 4 Way Adjustable

8100 Series Adjuster	8600 Series Adjuster	8760 Series Adjuster

Oval Track Shocks - 
Available as Rebound Adjustable

7100 Series Steel Body	7300 Series Winston Cup/BGN/Truck	7500 Series Short Track Smooth or Coilover Body

8100 Series - Double Adjustable
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.

The damper is completely owner serviceable and revalvable. Each and every part of the damper is available for replacement at a reasonable cost. 

8760 Series - 
Available as 3-Way & 4 Way Adjustable

"The 8760 Series is the newest generation in Penske dampers."

Race teams demand the newest damper technology to be integrated into their overall chassis design and it is for this reason that Penske Racing Shocks unveiled a completely new damper concept in 1998, the 8760 Series. 

The 8760 offers a more extensive range of "tunability" and hardware options in order to fulfill each race teams' specifications as well as the personal preferences of race engineers and drivers. With a variety of upgrades in its' overall damping range, tunability, and serviceability, it features an advanced modular design which will allow greater leeway in chassis packaging. This is accomplished with a new body that allows the radial positioning of either a piggyback or remote reservoir at any included 360 degree location. The 8760 is offered as a 3-way and 4-way adjustable damper and is available in both a standard body size and 45 mm.

Available Compression Adjusters:
Piggyback and Remote Reservoir:  8660 and 8760
Remote Reservoir:  8100

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.

8660 Series Compression Adjuster

When increased low speed damping control is required, the 8660 Series Compression Adjuster is ideal. Many teams are looking for a range of control at low shaft speeds, such as body roll, corner entry and exit. The design of the 8660 Series Compression Adjuster offers 35% more low speed adjustment than the 8100 Series Compression Adjuster.

When the damper is being compressed, the fluid is being displaced into the adjuster and passes through a piston in the adjuster. When making an adjustment, the secondary valve shims are being preloaded, giving you different compression forces.

For a minimal investment, the 8660 Series Compression Adjuster may be upgraded to the 8760 Series Compression Adjuster. The addition of a few extra parts will offer you separate adjusters for both high and low shaft velocities.

8760 Series Compression Adjuster

The 8760 Series compression adjuster is the ultimate tuning tool for the professional race team. The 8760 Series adjuster offers separate adjusters for both high and low speed shaft movements. The high speed adjuster controls larger track inconsistencies that may disrupt the car, while the low speed adjuster controls slow shaft movements such as body roll, corner entry and exit.

When the damper is being compressed, the fluid is being displaced into the adjuster and passes through a piston in the adjuster. When adjusting the high speed, the secondary valve shims are being preloaded, giving you different compression forces. The low speed adjustment meters the fluid and bypasses the piston in the adjuster, providing an adjustable combination of bleed and shim controlled damping.

In effect, the combination of a low speed and high speed adjustments will offer the ultimate tuning combination.