SERVICE PROCEDURES
2025 GRIP SL Damper Rebuild
Required Parts
- 025-03-063 Oil: Suspension Fluid, 4 WT, 1.0 Liter Bottle
- 803-04-090 Seal Kit: 2025 Grip SL (32 TC, 32 SC, 34 SC)
Required Tools
- 398-00-763 Tooling: DPX2, Base Valve Driver
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.
Step 1
Carefully clamp the wrench flats of the lower pressure tube in your soft-jawed vise. Unthread the topcap from the pressure tube counter-clockwise with your 6-point chamfer-less 26mm socket (Park tool FR-5 or FR-5.2 for 32mm TC forks). Lift the topcap assembly up and out of the pressure tube.
Step 2
Pull the IFP and spring assembly off of the topcap shaft. Separate the spring from the IFP. Replace the seals inside and outside of the IFP with new greased ones from the kit. Reinstall the spring and IFP onto the topcap shaft.
Step 3
Use a small round tool through the holes in the upper pressure tube to unthread the upper pressure tube by turning it counter-clockwise.
Step 4
Use a 5mm hex wrench to unthread the base valve bolt by turning it counter-clockwise. Carefully remove the base valve bolt with pin and barrel adjuster taking care not to lose any small parts. Remove the compression valving and replace any damaged shims.
Step 5
Use the DPX2 base valve tool (PN: 398-00-763) to unthread the compression piston counter-clockwise. Remove the piston followed by the shim and check spring.
Step 6
Push the shaft to extend the rebound piston assembly out of the lower pressure tube. Hold the base stud from turning with a 7mm wrench while turning the Piston Stud counter-clockwise with an 8mm wrench. Hold the base stud while you remove the entire rebound piston assembly by turning it counter-clockwise.
Step 7
Carefully remove the shaft from the pressure tube assembly by pulling it down out of the sealhead. Be careful to not lose the rebound needle or rebound tube that are loose in the shaft. Remove the rebound needle and tube. Replace the rebound needle o-rings with new greased ones from the kit.
Step 8
Remove the u-cup seal from the sealhead and replace it with a new greased one from the kit. Make sure to orient the seal correctly as shown.
Step 9
Insert the open end of the shaft into the sealhead. Reinstall the rebound tube making sure that is seats on the rebound adjuster at the base stud. Reinstall the rebound needle with new greased seals from the kit.
Step 10
Reinstall the piston assembly onto the shaft by threading it clockwise onto the shaft while holding the base stud from turning. Hold the base stud with an 7mm wrench while you tighten the piston base to 30 in-lb with a 8mm crows foot.
Step 11
With the pressure tube wrench flats clamped in your soft-jawed vise, pull the shaft assembly down into the pressure tube. Reinstall the check spring with the larger diameter end facing toward the pressure tube. Reinstall the check shim. Reinstall the piston threading clockwise to 55 in-lb torque with the DPX2 tool.
Step 12
Reinstall the compression valving followed by the base valve bolt with preload hat, pin, and barrel adjuster, tightening clockwise to 9 in-lb.
Step 13
Reinstall the upper pressure tube by threading it clockwise onto the lower pressure tube.
Step 14
Clamp the pressure tube wrench flats in your soft-jawed vise with the open end up. Fill the Pressure Tube approximately 1/2 way with FOX 4wt. oil. Stroke the Damper Shaft ~5 times then fully extend the Damper Shaft. Fill the Pressure Tube with FOX 4wt. oil up to the level of the bleed holes.
Step 15
The topcap Assembly must be installed directly in line with the Pressure Tube to ensure that the O-ring is not pinched. Slowly push the Topcap Assembly into the Pressure Tube. Tighten the topcap clockwise into the pressure tube with your topcap socket (Park tool FR-5 or FR-5.2 for 32mm TC forks) to 55 in-lb torque. Slowly cycle the damper through it's full travel over your waste oil basin to purge any excess damper oil.
