FOX DHX2 Manual

REAR SHOCK INSTALLATION

Rear shock setup and configuration varies greatly between different bicycle manufacturers. Be sure to refer to the owner's manual for your bicycle. FOX products should be installed by a qualified bicycle service technician, in accordance with FOX installation specifications. Improperly installed shocks can fail, causing the rider to lose control, resulting in SERIOUS INJURY OR DEATH.
If you are installing your shock on a bike for which the shock was not original equipment, follow the steps below to ensure proper clearance before riding.

COIL SHOCKS

1. Remove the coil spring from your shock (see the 'Removing the Coil Spring' section).
2. Install the shock onto your frame according to your frame manufacturer's instructions.
3. Slowly compress the suspension through its entire travel.
4. Check that the shock does NOT come within 3 mm of any portion of your frame or linkage as it cycles through its travel.
5. Remove the shock from your frame, reinstall the coil spring (see the 'Installing the Coil Spring' section), and reinstall your shock. Check that the spring does not contact any portion of your frame or linkage.
6. Set the sag according to instructions in this manal (see the 'Sag Setting' section) or online atwww.ridefox.com.

REMOVING THE COIL SPRING

The coil spring can be removed to check for shock clearance within the frame, or to change to a higher or lower rate spring.

1. Note the original position of each rebound knob, as you will need to reinstall them later in this same position. Hold the rebound knobs to keep them from turning, then use a 2.5 mm hex wrench to turn the screw counterclockwise. Remove the screw and rebound knobs.
2. Turn the preload adjuster counter-clockwise approximately 8 clicks.
3. Move the coil spring and spring retainer toward the preload adjuster.
4. Remove the round wire retaining ring that holds the spring retainer to the shaft eyelet, then remove the spring retainer.
5. Slide the coil spring off the shock body. You may need to remove mounting hardware if it interferes with spring removal.

INSTALLING THE COIL SPRING

1. Install the coil spring onto the shock body.
2. Install the spring retainer onto the shock with the protruding section positioned inside of the coil spring. Install the round wire retaining ring into its groove, making sure to seat it fully.
3. Slide the spring retainer back over the installed wire ring and ensure it is fully seated over the wire ring.
4. Tighten the preload adjuster just until the spring no longer moves, then turn the preload 8 clicks.
5. Use a 2.5 mm hex wrench to reinstall the rebound knobs in their original orientation.
6. Set the sag according to instructions in this manual (see the 'Sag Setting' section) or online atwww.ridefox.com.

SAG SETTING

To achieve the best performance from your FOX suspension, you will need to attain your proper sag setting. Sag is the amount your suspension compresses under your weight and riding gear. Sag should be set to 30% of total shock travel. Consult your bicycle manufacturer's instructions for recommendations about setting sag Watch the sag setup video at ridefox.com/sagsetup.

1. Measure the eye-to-eye distance on your bike's shock mounts.
2. With the help of a friend, sit on the bike in your normal riding position with your normal riding gear and measure eye-to-eye distance again. The difference between the two measurements is sag.
3. There are nine detent clicks per revolution of the preload adjuster. After installing the coil spring, set the preload adjuster to where it just contacts the coil spring, then turn it clockwise a minimum of 8 clicks.
4. To increase sag, turn the preload adjuster counter-clockwise. If you cannot achieve 30% sag with the minimum of 8 clicks of preload, you will need to obtain a lower rate spring.
5. To decrease sag, turn the preload adjuster clockwise no more than 26 clicks after setting the preload adjuster to where is just contacts the coil spring. If you cannot achieve 30% with the maximum of 26 clicks of preload, you will need to obtain a higher rate spring.

Suggested Sag Measurements
Travel	30% sag
55 mm	17 mm
65 mm	19 mm
70 mm	21 mm
75 mm	22 mm

COMPRESSION ADJUSTMENTS

Turn all adjusters to the closed position (full clockwise) until they stop. Then back them out (counterclockwise) to the number of clicks shown in the tables found in the Recommended Settings section.
Low-speed compression (LSC) adjustment is useful to control shock performance under rider weight shifts, G-outs, and other slow inputs.
High-speed compression (HSC) adjustment is useful to control shock performance under bigger hits, landings, and square-edged bumps.

2-POSITION LEVER

Begin with the 2-position lever in the OPEN mode.

The2-position lever is useful to make on-thefly adjustments to control shock performance under significant changes in terrain, and is intended to be adjusted throughout the ride.
The Open mode utilizes your standard HSC/ LSC, preset high- and low-speed compression settings. The preset high- and low-speed compression adjustments only have an affect on compression damping when the lever is in the OPEN position. The FIRM mode has a very firm low-speed compression setting and is useful for climbing and sprinting.

REBOUND ADJUSTMENT

The rebound adjusters can be turned with a 2 mm hex wrench or other similarly sized tool. Turn your rebound adjuster(s) to the closed position (full clockwise) until it stops. Then back it out (counterclockwise) to the number of clicks shown in the tables found in the Recommended Settings section.
Low-speed rebound (LSR) adjustment is useful to control shock performance under brake bumps, technical climbing, and off-camber cornering, when extra traction is needed.
High-speed rebound (HSR) adjustment is useful to allow the shock to recover from bigger hits and square-edged bumps quickly enough to absorb consecutive hits. When viewing the shock from the end with the HSR adjuster, rotating the HSR adjuster clockwise slows down HSR. Rotating the HSR adjuster counter-clockwise speeds up HSR.

RECOMMENDED SETTINGS

Spring Rate	Recommended LSR Setting	Recommended HSR Setting	Recommended LSC Setting	Recommended HSC Setting
200	14	8	11-12	6-7
225	14	8	11-12	6-7
250	13	7	11-12	6-7
275	13	7	11-12	6-7
300	12	7	11-12	6-7
325	11	6	11-12	6-7
350	11	6	9-10	4-5
375	10	5	9-10	4-5
400	10	5	9-10	4-5
425	9	5	9-10	4-5
450	8	4	9-10	4-5
475	8	4	9-10	4-5
500	7	3	9-10	4-5
525	6	3	7-8	2-3
550	6	2	7-8	2-3
575	5	2	7-8	2-3
600	4	2	7-8	2-3
625	4	1	7-8	2-3
650	4	1	7-8	2-3
675	3	1	7-8	2-3
700	2	1	7-8	2-3
725	2	0	7-8	2-3

SERVICE

Properly cleaning your FOX product between rides, in addition to maintenance service scheduled at regular intervals, will help to reduce repair costs and extend product life.

For further service procedures information, visit www.ridefox.com/OwnersManuals, or contact FOX for complete maintenance service (1.800.369.7469 or mtbservice@ridefox.com).

Minimum Recommended Service Items	Before every ride	After every ride	Regularly	Every 125 hours or yearly, whichever comes first*
Inspect the entire exterior of your fork/shock. The fork/shock should not be used if any of the exterior parts appear to be damaged. Contact your local dealer or FOX for repair.	X
Clean exterior with mild soap and water only, then wipe dry with a soft towel. Do not use a high-pressure washer or spray water directly at the seal/shock body junction.		X
Check sag and damper settings. Inspect the controls for visual damage and function.			X
Full service (full internal/external inspection, damper rebuild, air seal replacement for air shocks, air spring rebuild, bath oil and wiper replacement).				X

*For those who ride lift-accessed DH, Park, or Extreme Freeride or in extremely wet/muddy or dry/dusty environmental conditions where trail debris is sprayed onto the shock while on the trail, FOX encourages riders to perform maintenance earlier than recommended above as needed. If you hear, see, or feel something unusual, stop riding immediately and contact a FOX Authorized Service Center for proper servicing.

SEE ADDITIONAL INFORMATION AND VIDEOS:
ridefox.com

SAFETY INFORMATION

FOX products should be installed by a professional bicycle service technician, in accordance with FOX installation specifications. Improperly installed forks can fail, causing the rider to lose control resulting in SEVERE INJURY OR DEATH.
Modification or alteration of a FOX product can cause product failure resulting in SEVERE INJURY OR DEATH. Never modify or alter ANY part of a FOX product (including coil springs, lower leg cross brace, crown, steerer, upper tubes, lower leg, air can, seat post, air volume spacers, internals, axle slit shims, axle adapters, or any other parts).
FOX bicycle suspension products may also be used on pedalassisted motorized cycles or motorized vehicles that produce up to 250 watts of power. DO NOT use FOX Bicycle suspension products on vehicles that produce more than 250 watts of power.
FOX E-BIKE OPTIMIZED suspension products may be used on motorized cycles or motorized vehicles producing between 250-500 watts of power. DO NOT use any FOX bicycle suspension product on any pedal-assisted motorized cycle or motorized vehicle that produces more than 500 watts of power.
DO NOT use any FOX bicycle suspension products or FOX E-BIKE OPTIMIZED suspension products on any pedal-assisted motorized cycle or motorized vehicle that produces more than 500 watts of power. DO NOT use any FOX bicycle suspension product on any throttle-equipped motorized vehicle.
Misuse of FOX suspension products may cause the suspension to fail, resulting in property damage or SERIOUS INJURY OR DEATH, and void the warranty.
DO NOT use FOX bicycle suspension products on any vehicle carrying more than one operator or rider, such as a tandem bicycle or heavy utility bicycle.
Improper service, or use of non-FOX replacement parts with FOX forks and shocks may cause the product to malfunction, resulting in SEVERE INJURY OR DEATH. Never use a power washer to clean your FOX product.
Follow your brake manufacturer's installation instructions for proper installation and adjustment of the brake system. Failure to properly install and adjust your brakes can lead to a loss of control of the bicycle, which can result in SEVERE INJURY OR DEATH.
Your fork or shock may fail under conditions that cause bending and/or breaking to any part of the fork or shock. Any condition that causes a loss of air and/or oil, such as a collision or extended periods of non-use, may also cause your fork or shock to fail. A damaged and/or leaking fork or shock can fail, resulting in a crash and SEVERE INJURY OR DEATH. If you suspect your fork or shock has been damaged, stop riding immediately and contact FOX for inspection and repair.
Never attempt to pull apart, open, disassemble, or service a FOX shock that is in a "stuck down" condition. A "stuck down" condition results from a failure of the dynamic air seal (located between the positive and negative air chambers within the nonEVOL shock air sleeve), resulting with the negative chamber retaining a higher pressure than the positive chamber. To test whether the shock is in fact "stuck down":

• Remove the air cap and depress the Schrader valve, to completely release air pressure from the positive chamber of the shock.
• If the shock body retracts into the air sleeve near bottom-out after the air is released from the positive chamber, attach a FOX high-pressure pump and pressurize the shock to 250 psi (17 bar).
• If the shock does not fully extend, it is in a "stuck down" condition.
• Any attempt to service FOX air shocks in the "stuck down" condition can lead to SERIOUS INJURY OR DEATH. Contact FOX or an Authorized Service Center for repair.