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Shockwave Parts
Fox FIT RC2 Damper + Air Shaft Rebuild Kit (2013–2017)
Fox FIT RC2 Damper + Air Shaft Rebuild Kit (2013–2017)
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Fox FIT RC2 Damper + Air Shaft Full 200h Service Toolkit (2013–2017)
Everything you need to service your FIT RC2 damper and air spring, including dust wiper replacement, oil refresh, and full rebuild. Compatible with most 2013–2017 Fox 36 and Fox 40 forks with FIT RC2 dampers. Some Fox 40 models used coil springs, the lower leg drivers are still relevant for opening the fork and changing wipers.
Compatible With: Fox 36 and Fox 40 forks using the FIT RC2 damper (Factory Series 2013–2017) and also works on ALL FIT4 Dampers (2016-2024). Not compatible with GRIP or newer dampers.
Use Air Spring Seal kits, they are so cheap and the shipping is free because he ships them in letters! You will have to get the real fox kit for the damper sadly, I did not find any aftermarket ones.
What's Included:
-
3-in-1 Shaft Clamp for both damper and airshaft service:
- 8mm Shaft Clamp (damper shafts on some forks)
- 10mm Shaft Clamp (also fits air shafts)
- FIT Damper Body Clamp
- Dust Wiper Seal Press Tool (your selected fitment)
- Lower Leg Driver (your selected damper/air driver)
- Our Plastic Float NA2 Bullet Tool (for 10mm Fox air shafts)
- Optional upgrade: Metal NA2 Bullet Tool on Amazon
This rebuild only requires one shaft clamp with multiple diameters, no extra specialty tools needed. Make sure you have a chamferless 32mm top cap wrench (like the RISK tool) and the other basic fork tools.
Oil Info:
- Use Fox 10wt Green (or Motorex 5wt) in the damper
- Use Fox 20wt Gold in lowers (see Fox oil volume chart)
- Do not reuse old oil, always drain completely
- Use Fox 10wt Green (or Motorex 5wt) in the damper
- Use Fox 20wt Gold in lowers (see Fox oil volume chart)
- Do not reuse old oil, always drain completely
- Grease the Dust Wiper Seals inside and the lower leg bushings generously with SRAM Butter.
Essential References:
⚠️ Warnings:
- Always depressurize the air spring fully before removing the lowers.
- Do not open the base valve or replace the bladder unless it's blown.
- Clamp only on the correct shaft zones (never on threads or eyelets).
- Clean all shafts with isopropyl alcohol until surface feels slightly sticky.
- Always depressurize the air spring fully before removing the lowers.
- Do not open the base valve or replace the bladder unless it's blown.
- Clamp only on the correct shaft zones (never on threads or eyelets).
- Clean all shafts with isopropyl alcohol until surface feels slightly sticky.
Disclaimer: This is a home mechanic rebuild kit. Use at your own risk. See our Terms of Service.
Additional Tools Needed (Not included in the kit)
- 6-in-1 Top Cap Tool : for top cap removal (typically 32mm)
- Slickoleum Grease
- MixMizer Syringe (or use any clean funnel with a sealed tip)
Our version of the Damper Rebuild Procedure (Read the official FOX procedure as well)
- Clamp the damper body using the included body clamp
- Unscrew the seal head (use vice grip if it’s the old black one)
- Pull out shaft/piston assembly and drain oil
- Clean all internals with isopropyl alcohol
- Clamp the 10mm shaft to unscrew rebound assembly (use heat if needed)
- Swap in new sealhead and reassemble damper shaft
- Follow bleed steps below
Bleeding the FIT RC2 Damper
- Turn LSC fully in, remove retaining ring with a pick (add magnet to catch it)
- Re-open LSC, HSC, and rebound fully
- Clamp damper body upside down, clean first with isopropyl
- Fill damper halfway with oil
- Squeeze bladder slowly for 5–10 minutes until firm
- Top off oil to brim, insert shaft assembly slowly
- Torque to 8.5Nm
- Invert damper again, remove adjuster needle
- Bleed using syringe with 8mm tubing, stroke, squeeze, pull gently 15–30 minutes
- Double check all adjusters are open or bleed won't work
- Close LSC / open HSC to purge bypass zone
- Top off oil and reinstall needle and retaining ring
✅ Final Steps
- Grease and reinstall detent spring + ball
- Test rebound and compression adjusters
- Note: FIT RC2 may not fully extend when you stroke it outside the fork, this is normal because the damper is not pressurized.
- Reinstall damper using a 32mm chamferless socket
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