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PENSKE 8981 SHOCK
Features:
• 6 levels of adjustability
• Damping can be adjusted externally
• Blow off valve provides more linear damping curve
• Advanced technology construction
• Valving can be altered in minutes
• Unparalleled performance
• Proven design, performance and reliability
• Ride height is adjustable
The 8981 Series
damper utilizes research and development acquired from Penske’s decades
of racing experience at a world class level and makes it available for
your sportbike. The 8981 Series damper is a double adjustable model.
First, adjustability comes from the fact that the compression and
rebound dampening is adjusted externally instead of removing the damper
from the motorcycle. The compression adjuster is located on the remote
reservoir while 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
motorcycle. The 8981 Series adjuster offers a wide range of compression
adjustments for the serious racer. As the adjuster 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 and by clicking to the
number one position, the adjuster is set at the softest position
utilizing the largest hole in the compression adjuster drum. The number
six position on the knob denotes a full stiffness setting where 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 to a point of
“packing-up”. Penske has designed a valve in the compression adjuster
housing allowing the oil to bleed off, making for more linear force
curves. The 8981 Series is the choice of champions worldwide.
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