Installing Your Fork | Before You Ride | Setting Sag | Adjusting Rebound | Locking Out the Fork | Service Intervals | Important Safety Information
|
travel |
140 RL: 5.5 in./140 mm |
features/adjustments |
lever-actuated lockout, air spring pressure, rebound |
|
spring/damper type |
air/FIT RL |
|
intended use |
all-mountain, cross-country |
Be sure your fork is properly installed before proceeding. If your fork came pre-installed on your bicycle, continue to the next section.
Note: Do not use any solvents or de-greasers, as these products can cause serious damage to paint and anodized parts (upper tubes, knobs, steerers).
Do not spray water directly on the seal/upper tube junction. Do not use a high pressure washer on your fork.
You can also view a Flash video on Setting Sag.
To get the best performance from your fork, it is necessary to set and adjust sag. Generally, sag should be set to 15 – 25% of total fork travel.
Rider | ||
140 mm | 150 mm | |
≤125 | 45 | 40 |
125 - 135 | 50 | 45 |
135 - 145 | 55 | 50 |
145 - 155 | 65 | 60 |
155 - 170 | 70 | 65 |
170 - 185 | 75 | 70 |
185 - 200 | 80 | 80 |
200 - 215 | 90 | 90 |
215 - 230 | 100 | 100 |
230 - ≥250 | 110 | 110 |
Travel | XC/Race FIRM | All-Mountain PLUSH |
140 mm (5.50") | 21 mm (0.81") | 35 mm (1.38") |
150 mm (5.90") | 23 mm (0.91") | 38 mm (1.50") |
Symptom | Remedy |
Too much sag | (+) air pressure in 5 psi increments |
Too little sag | (-) air pressure in 5 psi increments |
Excessive bottoming | (+) air pressure in 5 psi increments |
Harsh ride; full travel not utilized | (-) air pressure in 5 psi increments |
The rebound adjuster knob is located at the bottom of the right fork leg. This knob has 18 clicks of potential adjustment range.
Rebound controls the rate of speed at which the fork extends after compressing. Turning the knob clockwise slows down rebound; turning the knob counter-clockwise speeds up rebound. As a starting point, turn the rebound adjuster knob all the way clockwise (full in) until it stops, then turn counter-clockwise (out) 12 clicks.
Knob Setting |
Setting Description |
Tuning Tips |
Setup Tips |
1 |
Slow Rebound |
Too slow and your fork will pack down and ride harshly. |
If you increase your spring rate or air pressure, you will need to slow down your rebound |
12 (Factory setting) |
Average Rebound |
|
|
18 |
Fast Rebound |
Too fast and you will experience poor traction and wheel hop. |
If you decrease your spring rate or air pressure, you will need to speed up your rebound setting. |
The blue compression lockout lever, located on the right-side top cap, allows you to close the compression damping circuit in the fork. This keeps the fork at the top of its travel, making it harder to compress.
Rotate the lever fully clockwise to lock out the fork. This position is useful in climbing and sprinting situations, but will sag with the rider’s weight. The fork will "blowoff" in the event that a big hit is encountered with the fork locked out.
To unlock the fork, simply rotate the lever fully counter-clockwise.
Note: The fork may cycle a couple of times after enabling lockout. Once complete lockout is achieved, the fork may continue to move 3 - 5 mm. This is normal and does not affect performance.
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FOX Factory Inc.