Shockwave Parts

FOX DHX RC2 / RC4 Full DIY Rebuild Tool Kit

$55.49 CAD

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Add the Damper Body + Piggy Back Reservoir Clamp No it's not leaking so I don't need them. Yes I like tools :)

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FOX DHX RC2 / RC4 Full DIY Rebuild Toolkit

Complete rebuild kit for FOX DHX RC2 and RC4 shocks (2010–2015). Includes shaft clamps, damper body clamp, and everything you need to replace dynamic seals and reset IFP depth. These shocks are built strong, and this kit covers both shaft diameter variations.

Do not forget to get yourself a schrader valve core tool!

Essential Tools (You might need to replace the core if leaking)

Pro Tip: These older shocks often leak air through the Schrader valve core. It’s smart to replace the core during service, even if it doesn’t appear to be leaking. You can get a Schrader valve core and tool kit for about $10 on Amazon, it’ll save you a headache later.

What’s Included and Optional

DHX Shaft Clamp (1/2" + 5/8") : choose the correct one depending on your shaft size (1/2" ≈ 12.7mm, 5/8" ≈ 15.8mm)
Damper Body + Reservoir Clamp : optional, only needed if leaking from body or piggyback
IFP Depth Tool (Graduated) : to precisely reset IFP height after bleeding

Seal Kits (Never included in the kits)

Special Tool Warning

The reservoir cap is recessed and narrow. A standard wrench will not fit. You will need a 32 mm headset cone wrench from Park Tool or similar narrow wrench. This one might work (not Park Tool one not tested): Park Tool HCW-15 or Bikehand 32mm Cone Wrench. You can also open it with a vise grip (I did) but I damaged the paint on the cap a bit.

IFP Pressure and Depth

IFP Pressure: around 160 psi

Measure IFP Depth from the flat surface, not the raised rim:

10.500 x 3.500 = 1.100"
9.500 x 3.000 = 1.020"
8.750 x 2.750 = 0.980"
8.500 x 2.500 = 0.940"
7.875 x 2.250 = 0.900"
7.875 x 2.000 = 0.860"
7.500 x 2.000 = 0.860"

Important Tips

Most problems come from dynamic seals or IFP seal leaks
If rebound doesn’t work, make sure to do a good bleed and IFP pressure are correct.Just that can bring back the shock to life.
Don’t unthread the piggyback unless it’s leaking, it’s risky, and you need the right tool!
Always clean shafts with isopropyl alcohol and wrap with dry paper to increase friction before using shaft clamps!
Always heat eyelets or Loctited parts before removal

Rebuild Video: You don’t need to open the adjuster like shown in FOX’s service manual. Just follow the MTB Hydraulics method instead, it’s easier and safer. Watch the video.

If you read this far: You’re smarter than 80% of people and you're going to have a great time working on your shock. Just go slow, clean everything, follow each step, and you’ll get pro-level results at home.

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Disclaimer

⚠️ These tools are intended for skilled home mechanics. If misused, you may damage your shock or lose performance. Don’t open non-leaking piggybacks or base valves. Always follow proper safety procedures. By purchasing, you agree to our terms of service.