Installing Your Fork | Before You Ride | Setting Sag | Adjusting Rebound | Changing the Coil Spring | Service Intervals | Important Safety Information
|
travel |
160 R: 6.3 in./160 mm |
features/adjustments |
coil spring preload, rebound |
|
spring/damper type |
coil spring/open bath R |
|
intended use |
downhill, all-mountain, freeride |
Note: This fork is designed to use the downhill brake system only. The disc brake caliper mounts directly to the fork leg and is positioned specifically for the use of 200-225 mm rotors.
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.
Travel | XC/Race FIRM | Freeride PLUSH |
160 mm (6.3") | 24.0 mm (0.94") | 40.0 mm (0.75") |
170 mm (6.7") | 25.5 mm (1.00") | 42.5 mm (1.67") |
180 mm (7.1") | 27.0 mm (1.06") | 45.0 mm (1.77") |
If your sag measurement value is less than the Sag Setup table value: turn the preload knob counter-clockwise one (1) full turn. Measure sag again and repeat this adjustment if necessary.
If your sag measurement is value greater than the Sag Setup table value: turn the preload knob clockwise one (1) full turn. Measure sag again and this repeat adjustment if necessary.
Note: If you cannot achieve correct sag by adjusting the preload knob, you may need to change your VAN coil spring to one with the appropriate spring rate for your weight and fork travel.
See the Sag Troubleshooting table, and given the travel length of your fork, see either the 36 VAN Coil Spring Setting Guidelines, 160 mm or 36 VAN Coil Spring Setting Guidelines, 170 & 180 mm table. If you are uncertain as to which coil spring is the original specification, see Changing the Coil Spring.
Symptom | Remedy |
Too much sag | Change to higher rate coil spring |
Too little sag | Change to lower rate coil spring |
Excessive bottoming | Change to higher rate coil spring |
Harsh ride; full travel not utilized | Change to lower rate coil spring |
FOX Part # | Spring Rate | Color Code | Rider Weight |
039-05-100 | 35 lb/in | Black | <90–115 |
039-05-101 | 40 lb/in | Purple | 115–155 |
039-05-102 | 45 lb/in | Blue (default) | 150–180 |
039-05-103 | 50 lb/in | Green | 175–210 |
039-05-104 | 55 lb/in | Yellow | 205–240+ |
FOX Part # | Spring Rate | Color Code | Rider Weight |
039-05-090 | 31.4 lb/in | Black | <90–115 |
039-05-091 | 35.9 lb/in | Purple | 115–155 |
039-05-092 | 40.4 lb/in | Blue (default) | 150–180 |
039-05-093 | 44.8 lb/in | Green | 175–210 |
039-05-094 | 49.3 lb/in | Yellow | 205–240+ |
Note: 36 VAN forks cannot be reduced in travel.
The rebound knob is located on the top of the right fork leg, and has 15 clicks of adjustment. Rebound controls the 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) 8 clicks.
Knob Setting |
Setting Description |
Tuning Tips |
Setup Tips |
1 |
Slow Rebound |
Too slow and your fork will pack down and ride harsh. |
If you increase your spring rate or air pressure, you will need to slow down your rebound |
8 (Factory setting) |
Average Rebound |
||
15 |
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. |
Bushing Technology & Inspection | Seals & Foam Rings | Control Direction | Oil Volumes | Structural Inspection | Dropout Thickness Inspection | Torque Values | Unit Conversion | Suspension Tuning Tips | Using the Pump | Important Safety Information | Service Intervals | Contact FOX Service | Warranty Information | FOXHelp Service Web Site
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FOX Factory Inc.