Penske Racing Shocks 8900 Series - Manual (Page 8)

8900 Series Rebound Adjuster
The adjuster (red knob) is located at
the base of the adjustable platform.
During the compression or rebound
stage of the shock movement, fluid is
forced through two ports in the main
shaft. Inside the main shaft is a
needle and jet assembly, which
adjusts the amount of fluid passing
through the jet. By turning in the
adjuster (clockwise), the needle is
forced up into the jet, restricting the
fluid, causing firmer damping forces.
In reverse, by turning the adjuster
out (counter clock-wise), more oil is
allowed to pass through the jet
causing lighter damping forces. The
adjustment assembly, is a timed
control for the shims located on the
main piston to work.
- +
ADJUSTER KNOB
+ / - 36 clicks
+ = More Damping
-
= Less Damping
General Valving Characteristics
High Speed Compression High Speed Rebound Low Speed Compression
and Rebound 5