SERVICE PROCEDURES
2025 Grip X2 Damper Rebuild
Required Parts
- 025-03-063 Oil: Suspension Fluid, 4 WT, 1.0 Liter Bottle
- 803-04-086 Seal Kit: 2025 Grip X2 (34,36,38,40)
Required Tools
- 398-00-707 Tooling: Fork Topcap Socket, 28mm V2, 3/8 Drive
- 398-00-981 Tool: Service, VVC, HSR, Grip X2
- 398-00-983 Service Tool: GripX2, Piston Band Sizer Pusher
- 398-00-985 Service Tool: GripX2, Piston Band Sizer Funnel(.775)
- 398-00-986 Service Tool: GripX2, Piston Band Sizer Funnel(.773)
- 398-01-168 Service Tool: Grip X2, Piston Stud Socket
- 803-01-324 Kit: Tooling: 2019 Clamps, Grip Damper, Body and Shaft
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
Unthread the topcap from the pressure tube counter-clockwise with your 6-point chamfer-less 28mm socket. Lift the topcap assembly up and out of the pressure tube.
Step 2
Remove the cartridge from the vice and invert over your waste oil basin. Drain all oil from the cartridge then clamp it in your shaft clamps with the base stud facing up. Unthread the sealhead counter-clockwise from the cartridge body with a 20mm wrench. Lift the damper shaft assembly up to remove it from the cartridge body.
Step 3
Hold Top Cap Assembly unthread the base valve nut by turning it counter-clockwise with a 12mm wrench. Remove the base valve piston and the valving assembly and set them aside. Replace the Compression Piston o-ring with a new greased one from the kit.
Step 4
Loosen the set screws in the HSC Adjust Hat by turning it counter-clockwise with a 2mm hex wrench. Lift up to remove it. Followed by the IFP and Spring
Step 5
Replace all o-rings within the Topcap assembly with new greased ones from the kit. Separate the IFP from the Spring Isolator to access the IFP o-rings for replacement.
Step 6
Reinstall the IFP spring. Reinstall the IFP into the Spring then reinstall them both onto the shaft. Push down to engage the IFP with the IFP spring.
Step 7
Reinstall the HSC Adjust Hat onto the shaft. Apply blue Loctite 243 to the set screw threads. Align the screw with the hole in the shaft then tighten clockwise to 2.5 in-lb (0.3 Nm) torque with your 2mm hex wrench.
Step 8
Reinstall the rest of the Compression Valving, the Compression Piston, Check Valve, Check Spring, and Piston Nut. Tighten the Piston Nut clockwise to 20 in-lb (2.26 Nm) torque with your 12mm socker. Take care not to pinch any valves.
Step 9
Clean the Damper Shaft Assembly with Isopropyl alcohol and a lint-free paper towel then clamp in your shaft clamps with the Rebound Piston Assembly at the top. Unthread the Rebound Piston Assembly by turning it counter-clockwise with a 15mm wrench and set aside. Unthread the screw in the HSR nut counter-clockwise with a 2mm hex wrench, using your HRS knob unthread VVC nut.Remove Leaf Spring and VVC Plate.
Step 10
Unthread your Rebound Piston counter clockwise using your Piston Stud Socket( 398-01-168). Remove Piston, Midvalve and Rebound Check Spring.
Step 11
Heat the Piston Stud with a propane torch for 3-5 seconds to break down the red Loctite. Unthread the Piston Stud counter-clockwise with a 12mm wrench. Be careful as the Piston Stud may be hot.
Step 12
Lift out the HSR Adjuster with LSC Needle.
Step 13
Remove the Sealhead assembly from the shaft.
Step 14
Clean the shaft with Isopropyl alcohol and a lint-free paper towel then clamp in your shaft clamps with the Base Stud at the top. Unthread the set screw in the Base Stud counter-clockwise, then remove the detent ball and spring with a magnet. Remove the HSR Shaft.
Step 15
Use a long thin tool (1.5mm hex wrench shown) to push the LSR Coupler out of the HSR Shaft. Take care not to lose the detent ball and spring.
Step 16
Unthread the Base Stud with a 1/2" wrench. Be careful as the Base Stud may be hot.
Step 17
Unthread the HSR Adjuster counter-clockwise from the LSR Needle.
Step 18
Replace all o-rings and seals on all Damper Shaft components with new greased ones from the kit as shown.
Step 19
Reinstall the detent spring and ball into the hole in the LSR coupler. Use grease to help retain the parts during installation.
Step 20
Reinstall the LSR coupler with detent parts into the open end of the HSR shaft taking care to capture the detent parts within the shaft as shown. Use a blunt tool to push the LSR coupler into the shaft until the non-hex end is sticking out of the adjuster end of the HSR shaft.
Step 21
Insert the smaller end of the LSR needle into the HSR adjuster. Insert the end of the LSR needle with female hex feature into the open end of the HSR shaft. Engage the HSR adjuster with the HSR shaft.
Step 22
Coat the shaft threads with a thin film of Slick Honey. Install the rebuilt Sealhead assembly onto the shaft as shown. Remove any Slick Honey from the shaft threads with Isopropyl alcohol and a lint-free paper towel.
Step 23
Clean any Loctite residue out of the internal threads of the Base Stud. Clamp the shaft in your shaft clamps, then apply 1-2 drops of Red Loctite 263 to the shaft threads. Take care not to get Loctite on the o-ring within the Base Stud.
Step 24
Reinstall Rebound Check Spring, followed by Midvalve and Rebound Piston.
Step 25
Reinstall the HSR Plate with its ramps and pins facing up. Reinstall the Leaf Spring onto the HSR Nut then reinstall the HSR Nut onto the HSR Adjuster without tightening down the nut fully or tightening the fixing screw.
Step 26
Position the Leaf Spring in the approximate middle of it's adjustment range. Insert a 0.050" (1.27 mm) thick shim into the space between the HSR Nut and the Leaf Spring. Tighten the HSR Nut screw clockwise to 15 in-lb (1.69Nm) torque with a 2mm hex wrench.
Step 27
Reinstall the detent ball and spring into the Base Stud. Tighten the set screw clockwise with a 2mm hex wrench until it is flush with the Base Stud.
Step 28
Clamp the Pressure Tube in your shaft clamps with the GRIP2 laser etched end facing down. Apply 1-2 drops of blue Loctite 243 to the threads of the Pressure Tube. Take care not to get Loctite on the o-ring within the Sealhead Assembly. Reinstall the Damper Shaft Assembly tightening the Sealhead clockwise to 150 in-lb (16.9 Nm) torque with a 20mm crows foot.
Step 29
Invert the Pressure TUbe then reclamp with open end up. Fill the Pressure Tube approximately 1/2 way with FOX 4wt. infused 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 30
Set the HSC and LSC to full open by turning both compression adjusters fully counter-clockwise. 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. Clean off any oil from the topcap threads. Apply 1-2 drops of blue Loctite 243 to the topcap threads. Tighten the Topcap Assembly clockwise to 150 in-lb (16.9 Nm) torque with your 28mm socket.
