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Rebound Adjustment (R, RL, RLC, RLT & X)
FOX FORX feature a rebound adjuster. This allows the rider to control the
speed at which the fork extends after compression. The Rebound Adjustment
Knob is the red knob located on top of the right fork leg. Turn it clockwise for
slower rebound and counter-clockwise for faster rebound. There are 12 clicks
of adjustment in the full range of motion. The proper rebound setting is a
personal preference and varies depending upon spring preload, spring rate
and riding style. Rebound should be as fast as possible without kicking back.
If the rebound is too slow the suspension will not function properly and the
wheel will not follow the changing terrain. Determining the proper rebound
setting may take a few rides to fine tune. On those first few rides adjust the
rebound and note the different ride characteristics. Your rebound adjustment
may change for different riding conditions. As a starting point for tuning your
rebound adjustment, turn the rebound adjuster knob all the way clockwise
until it stops, then turn counter-clockwise 6 clicks. (For F80X and F100X forks
it is necessary to firmly tap the front wheel on the ground before cycling the
fork. This opens the inertia valve and allows the damper to function for 1-3
seconds.
Compression Lock-out Lever (RL, RLC & RLT)
The blue compression lock-out lever is located below the red rebound
adjuster knob. It allows the rider to close the compression damping in the
fork. This keeps the fork at the top of its travel and it will be hard to com-
press. The fork is said to be “locked-out” in this position. Rotate the lever
clockwise to the six o’clock position to achieve lock-out. This position is
useful in climbing and sprinting situations. The fork will “blow-off” in the event
that a big hit is encountered with the fork locked-out. To unlock the fork,
simply rotate the lever counter-clockwise to the three o’clock position. This
puts the cartridge in “open” mode and you will have normal compression
damping. The lock-out lever will rotate past the three o’clock position. This is
normal and does not affect performance.
Note: The fork may cycle a couple times after activating the lock-out. Once
complete lock-out is achieved, the fork may continue to move 3-5mm. This is
normal and does not affect performance.
Compression Adjustment (RLC Only)
Low-speed compression damping is adjusted with the blue bezel ring below the blue
lockout lever. Compression damping controls the quickness with which the fork
moves through its travel. Rotate the bezel clockwise for slower (harder) compression
and counter-clockwise for faster (easier) compression. There are 9 clicks of adjust-
ment. The proper setting is a personal preference and varies depending on your
weight and riding style. Determining the proper compression setting may take a few
rides to fine tune. On those first few rides adjust the compression and note the
different ride characteristics. Your compression damping setting may change with
different riding conditions. As a starting point for tuning your compression, turn the
bezel clockwise until it stops, then back off 5 clicks.
Damping Adjustment Guidelines
Blow-off Threshold Adjustment (RLC, RLT)
FLOAT RLC, Vanilla RLC and F80RLT feature Blow-off Threshold Adjustment
capabilities. It is adjusted with the blue knob located at the bottom of the right fork leg.
This gives the rider the ability to adjust the force required to cause the fork to blow-off
when it is in the locked-out position. Turn the knob clockwise to make it harder to
blow-off and counter-clockwise to make it easier. There are twelve (12) clicks of
adjustment in the full range of motion. As a starting point for tuning your blow-off
threshold, turn the knob all the way clockwise until it stops, then back off one click.
Bump Threshold Adjustment (F80X & F100X)
The blue knob on the lower right side is the Bump Threshold Adjustment. The F80X
and F100X feature an adjustment for the size of bump required to overcome the lock-
out of the fork. The bump threshold adjustment has 22 clicks of adjustment and the
factory setting is fully out counter-clockwise, then in clockwise 6 clicks. This is close to
the most sensitive tuning position. Turning the knob clockwise will make the inertia
valve less sensitive thus requiring a larger bump to activate.
F80X and F100X Damper Operation
FOX FORX F80X & F100X with TerraLogic Technology represent the
ultimate in cross country front suspension. The F80X and F100X feature a
lock-out that is controlled by an inertia valve. The F80X and F100X remain
locked out until there is input from the trail. The inertia valve then opens
allowing the damper and subsequently the fork to function normally. When
there is no longer input from the trail, the inertia valve closes and the fork
again locks out. The lock-out featured on the F80X and F100X is firm but not
“rock solid”. This is an important design characteristic and is normal. Fea-
tured adjustments on the F80X and F100X are Rebound and Bump Threshold.
Rebound Adjuster
Lock-out Lever
Low-speed Compression Adjuster
Blow-off Threshold Adjuster
Bump Threshold Adjuster
