32 26 FLOAT

Installing Your Fork | Before You Ride | Setting Sag | Adjusting Rebound | Climb. Trail. Descend. | Adjusting Trail Mode | About Terralogic® Brassmass™ | Adjusting Terralogic® Threshold | Service Intervals | Important Safety Information

Installing Your Fork

Be sure your fork is properly installed before proceeding. If your fork came pre-installed on your bicycle, continue to the next section.

Before You Ride

1. Check that quick-release levers are properly adjusted and tightened.
2. Clean the outside of your fork with mild soapy water, and wipe dry with a soft, dry rag.

   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.

3. Inspect the entire exterior of your fork. The fork should not be used if any of the exterior parts appear to be damaged. Contact your local dealer or FOX Racing Shox for further inspection and repair.
4. Check your headset adjustment. If loose, adjust it accordingly to your bicycle manufacturer's recommendations.
5. Check that all brake cables or hoses are properly fastened.
6. Test the proper operation of your front and rear brakes on level ground.

Setting Sag

To get the best performance from your fork, it is necessary to set the proper air spring pressure by adjusting sag. Generally, sag should be set to 15 – 25% of total fork travel.

1. Unscrew the blue aircap on top of the left fork leg to expose the Schrader valve.
   
   
2. Attach a FOX Racing Shox High Pressure Pump to the Schrader valve.
3. Pump your fork to the appropriate setting from the Suggested Air Spring Pressure Settings table below, then remove the pump.

   TIP: Use your air spring PSI value in "Suggested Air Spring Pressure Settings" only as a starting point. Discovering your best sag value is a process that takes some time to fully discover, given the variables of your riding style, bike geometry, total weight, and your suspension feel preferences.

4. Unless your fork already has a sag setting o-ring on an upper tube, temporarily install a zip tie to an upper tube. Slide the o-ring (or zip tie) down against the scraper lip of the fork dust seal.
5. Make sure your CTD fork is in Descend mode (fully counter-clockwise). If your fork has the Terralogic® damper, turn the blue Terralogic® threshold adjust knob to fully counter-clockwise out.

   NOTE:  Be sure to return the blue Terralogic® threshold adjust knob setting to fully clockwise in after achieving proper sag.

6. Dressed to ride (meaning a filled hydration bag, if you use one), position your bike next to a wall or table to support yourself. Without bouncing, mount your bicycle. Assume a normal riding position for at least 30 seconds, allowing the suspension to fully settle. Distribute your weight evenly between the saddle, handlebars and pedals, as you would naturally position yourself when riding.
7. Dismount your bike without bouncing downward, to avoid further moving the o-ring or zip tie. Measure the distance between the seal and the zip tie. This measurement is your sag value.
8. Compare your actual sag value to your target sag value in the Sag Setup table below.
   
   
   • If your sag measurement value is less than the Sag Setup table value, screw on the pump fitting, note the current air pressure setting and depress the black bleed-valve to reduce the gauge pressure by 5 psi. Measure sag again and repeat this adjustment, if necessary.
   • If your sag measurement value is greater than the Sag Setup table value, screw on the pump fitting, note the current air pressure setting and pump to increase the gauge pressure by 5 psi. Measure sag again and repeat this adjustment if necessary.
   
   
9. Screw the blue aircap back on, and go ride.
   
   

   Rider Weight lbs.	Suggested Air Spring Pressure Settings PSI
   	80 mm	100 mm	120 mm	140 mm	150 mm
   ≤125	60	55	50	55	50
   125 - 135	60	55	50	60	55
   135 - 145	65	60	55	65	60
   145 - 155	75	70	65	75	70
   155 - 170	85	80	75	80	75
   170 - 185	90	85	80	85	80
   185 - 200	95	90	85	90	90
   200 - 215	100	95	95	100	100
   215 - 230	110	100	100	110	110
   230 - ≥250	120	110	110	120	120

   
   

   Sag Setup
   Travel	XC/Race FIRM	All-Mountain PLUSH
   80 mm (3.50")	12 mm (0.50")	20 mm (0.75")
   100 mm (3.90")	15 mm (0.62")	25 mm (0.98")
   120 mm (4.70")	18 mm (0.69")	30 mm (1.19")
   140 mm (5.50")	21 mm (0.81")	35 mm (1.38")
   150 mm (5.90")	23 mm (0.91")	38 mm (1.50")

   
   

   Sag Troubleshooting
   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

Adjusting Rebound

The rebound adjuster knob is located at the bottom of the right fork leg.

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.

Climb. Trail. Descend.

The blue CTD lever lets you to switch between the Climb, Trail, and Descend ride modes. Each mode is most suitable for each specific type of terrain, providing best performance and riding enjoyment with your fork. With some experience, you can experiment with using Trail mode when descending, or Descend mode for flat or undulating trails.

NOTE:  With full CTD suspension, front to rear suspension balance is best achieved by running the fork in the same ride mode as the rear shock (Climb with Climb, Trail with Trail, Descend with Descend).

Climb Mode

Rotate the CTD lever fully clockwise to set the fork in Climb mode, which is most useful for climbing and sprinting. In Climb mode, the fork will "blow off" in the event that a big hit is encountered. This setting was formerly known as “lockout.”

Climb Tune Factory Settings

There are two pre-set Climb Tune mode settings offered for Factory and Performance model forks: medium and firm.

Refer to the Climb Tune decal located on the crown next to the CTD lever, to determine which factory pre-set climb tune your fork has:

	Medium factory settings will be found on longer travel forks (130 mm travel and above for 26" forks, and 120 mm travel and above, for 29" forks)
	Firm factory settings will be found on shorter travel XC-type forks

Climb Tune factory settings can only be altered through complete disassembly and re-bleeding of the CTD damper system. Contact your local dealer or FOX at 1-800-FOX-SHOX for more information. Additional service information can be viewed at http://service.ridefox.com.

NOTE:  The fork may cycle a couple of times after you engage Climb mode. Once complete Climb mode is achieved, the fork may continue to move 3 - 5 mm. This is normal, and does not affect performance.

Trail Mode

Rotate the lever to the middle setting of the blue CTD lever to engage Trail mode. Trail mode offers significantly less compression damping than climb mode, which is good for a light pedaling platform when pumping undulating terrain, and for preventing excessive travel in technical riding situations (such as low-speed drops).

Descend Mode

Rotate the lever fully counter-clockwise to set the fork in Descend mode, which is similar to Trail mode but with significantly less low-speed compression damping, for the softest ride when descending.

Adjusting Trail Mode (FIT CTD Trail Adjust Only)

Factory FIT CTD Trail Adjust model forks feature a three-position Trail Adjust control that regulates low-speed compression damping only while you are in Trail mode.

NOTE:  While it is possible to readjust FIT CTD Trail Adjust when you are in either Climb or Descend mode, Trail Adjust changes will only be felt in Trail mode.

For a firmer low-speed compression setting in Trail mode, turn the black Trail Adjust dial clockwise. For a lighter setting, turn the Trail Adjust dial counter-clockwise.

TIP: This setting is designed to work in conjunction with the rear shock, keeping in mind that front to rear suspension balance works best when the fork is in the same ride mode as the rear shock.

Terralogic® Brassmass™

The Terralogic® damper contains a weighted brass inertia valve called Brassmass™, which freely slides on a shaft to open and close compression flow ports in the damper.

The Brassmass™ assembly automatically responds to the impact of bumps or potholes in the trail, opening the compression flow ports and allowing the flow of damping oil. The Brassmass™ assembly does not respond to rider input (pedaling, sprinting, G-outs), keeping the compression flow ports closed and maintaining the pedaling platform or the feeling of fork lockout. With the patented timer circuit constantly in control as you ride, the transition between maximum pedaling efficiency and low speed damping control is nearly instantaneous.

The 15-position blue Terralogic® threshold adjust knob located on the bottom of the right fork leg allows you to fine-tune your pedaling platform balance anywhere between lockout-firm to fully open plush damping (or zero pedaling platform).

Adjusting Terralogic® Threshold

Terralogic® threshold is an adjustable compression blow-off valve that bypasses the Brassmass™ assembly, adjusted with the blue knob located on the bottom of the right fork leg. This knob enables you to regulate compression platform when the Brassmass™ assembly is closed.

NOTE:  If you have just set your rebound, return the blue Terralogic® threshold adjust knob to fully clockwise in, before making your Terralogic® threshold adjustment.

To make pushing through the fork travel harder and increase the pedaling platform, turn the threshold adjust knob clockwise. Turning the adjust knob completely clockwise makes the fork feel locked out—until the Brassmass™ activates from the force of impacting a bump in the trail terrain.

To make pushing through the fork travel easier and decrease the pedaling platform, turn the threshold adjust knob counter-clockwise. Turning the knob fully counter-clockwise bypasses the effect of the Brassmass™ assembly entirely. The threshold adjust knob has fifteen (15) clicks of adjustment.

In the table below, FOX offers a suggested range of Terralogic® threshold adjustment settings per fork travel, as a starting point for your experimentation. As no two riders are the same (weight, strength, riding style, terrain choices, or simply that personal preference with riding "feel"), FOX encourages you to spend some time exploring the possibilities with Terralogic® threshold adjustment, to discover that "sweet spot" when it just feels right to you.

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FOX Factory Inc.