SERVICE PROCEDURES

Fork Bushing Removal and Installation Procedure

Required Parts

Required Tools

  • 8mm Allen
  • 19mm socket
  • 803-01-610 Kit: Tooling: 38mm Fork Bushing Extractor Assembly
  • 803-01-909 Kit: Tooling: 32mm Fork Bushing Extractor Assembly
  • 803-01-910 Kit: Tooling: 34mm Fork Bushing Extractor Assembly
  • 803-01-911 Kit: Tooling: 36mm Fork Bushing Extractor Assembly
  • 803-01-912 Kit: Tooling: 40mm Fork Bushing Extractor Assembly
  • 803-04-336 Tooling: Complete Fork Bushing Install Tool Set

WARNING: Always wear safety glasses and protective gloves during service to prevent potential injury. Failure to wear protective equipment during service may lead to SERIOUS INJURY OR DEATH.

WARNING: FOX products should be serviced by a trained bicycle service technician, in accordance with FOX specifications. If you have any doubt whether or not you can properly service your FOX product, then DO NOT attempt it. Improperly serviced products can fail, causing the rider to lose control resulting in SERIOUS INJURY OR DEATH.

WARNING: FOX suspension products contain pressurized nitrogen, air, oil, or all 3. Suspension misuse can cause property damage, SERIOUS INJURY OR DEATH. DO NOT puncture, incinerate or crush any portion of a FOX suspension product. DO NOT attempt to disassemble any portion of a FOX suspension product, unless expressly instructed to do so by the applicable FOX technical documentation, and then ONLY while strictly adhering to all FOX instructions and warnings in that instance.

WARNING: Modification, improper service, or use of aftermarket replacement parts with FOX forks and shocks may cause the product to malfunction, resulting in SERIOUS INJURY OR DEATH. DO NOT modify any part of a fork or shock, including the fork brace (lower leg cross brace), crown, steerer, upper and lower leg tubes, or internal parts, except as instructed herein. Any unauthorized modification may void the warranty, and may cause failure or the fork or shock, resulting in SERIOUS INJURY OR DEATH.

Bleeder valves must be removed prior to extracting the old bushings, and put back in after installing the new bushings. If the bleeder valves are left in during the bushing extraction/install process, the bleeder valves can be damaged and metal shavings can get into the bath oil.

Removal

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Step 1

Thread one of the 5/8" Nuts onto the threaded rod, deep enough to allow you to clear the lower bushing. Install Sleeve followed by Extractor and the second 5/8" nut as shown.

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Step 2

Clamp your Bushing Extractor Assembly in a soft-jawed vice. Insert your lower leg assembly onto the Bushing Extractor Assembly  past the upper and lower bushing until Sleeve sits flush with lower leg.

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Step 3

With your 24mm wrench, turn the lower nut counterclowise until bushings are pushed out.

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Step 4

Unthread nut and remove Extractor, and sleeve. Extracted bushing will be inside of the sleeve.

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Repeat steps 1-4 for the other side of the lower leg.

Install Lower Bushing

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Step 1

Install the correct Installation Tip and Guide Ring based on the Fork family. The Installation Tip and Guide Ring are engraved with fork family. Install Guide Ring first (with the small diameter end closest to the installation Tip), then the Installation Tip. Use a 8mm allen to tighten the M10 screw until the Installation Tip is sercured into the shank.

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Step 2

Find the appropriate bushing depth, once determined, use the Spacer Combinations to set up proper depth. Slide Spacers over the M12 bolt in the handle.

*Note: While a lower leg may be listed as being introduced in a specific model year, that part may be used across various model years going forward. While not listed specifically by model year, your fork may fall under the listing for the previous most recently introduced similar version of the lower leg.

You can also verify which lower leg you are working on by measuring the location of the original bushings before removal. Compare your measurement to the table to verify correct lower leg bushing position.

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Step 3

Use a 19mm Socket to screw the M12 bolt into the shank portion of the tool. Once the Spacers are installed, the depth can be verified by measuring from lip on the Installation Tip to the lip of the Guide Ring. Insert the Hammer Cap onto the Handle. The tool is now assembled. 

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Step 4

Place the lower bushing on the Installation Tip and insert the bushing into the lower. Note: Orient Bushing slits toward each other for lower legs with rear facing bypass channels. Orient the Bushing slits away from each other for lower legs with inward facing bypass channels.

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Step 5

Slide the Guide Ring into the wiper bore at the top of the fork lower until the Guide RIng bottoms out on the top of the fork lower. Using a mallet, drive the bushing into the fork lower. The bushing will be at its depth once the handle of the tool makes contact with the top of the Guide Ring. 

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Repeat steps 1-4 for the other side of the lower leg.

Install Upper Bushing

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Step 1

Install the correct Installation Tip and Guide Ring (with the small diameter oriented toward the installation Tip) based on fork family. Install Guide Ring first, then the Istallation Tip. Use a 8mm allen to tighten the M10 screw until the Installation Tip is secured into the handle.

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Step 2

Once the Installation Tip and Guide Ring is installed, the depth can be verified by measuring from the tip of the Installation Tip to the lip of the Guide Ring. Note: All upper bushings require a depth of 16mm. NO SPACERS REQUIRED. Insert the Hammer Cap into the Handle. The tool is now assembled.

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Step 3

Place the bushing on the Installation Tip and insert the bushing into the lower leg. Note: Orient Bushing slits toward each other for lower legs with rear facing bypass channels. Orient the Bushing slits away from each other for lower legs with inward facing bypass channels.

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Step 4

Using a mallet, drive the bushing into the fork lower. The bushing will be at its depth once the handle of the tool makes contact with the top of the Guide Ring.

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Repeat steps 1-4 for the other side of the lower leg.