Use this cheap and reliable seal kit from MTB-Hydraulics:

• 2016–2017 DHX2 Routine Kit
• 2018–2020 DHX2 Routine Kit

Includes all seals needed and ships via untracked mail for only a few dollars.

Do not open the piston nut, this often causes shaft failure. Instead, remove the sealhead from the eyelet side (only possible if using the o-ring style sealhead from the MTB-Hydraulics kit). If you're using the Fox kit, you'll need to use the bullet tool from the piston side.

• Shaft Clamp (2016–2020 models only)
• IFP Depth Tool
• Bullet Tool for Fox DHX2 / X2 2016–2020

The shaft may still be usable. You can install a thin profile 1/4-28 thread nut with red Loctite if there’s enough thread left. Just go to any industral store and they the nut will probably cost around 1$. If the break is too low, you’ll need a new shaft. Here is a link to a shaft, it's around 20$, be carefull to choose the good shaft: X2 9mm Shaft Search

• All Years DHX2 Clamp (2016+)
• Trunnion Torque Tool (for M10 trunnion bolts)

• Bench vise
• Knipex 10-inch pliers (recommended)
• Adjustable wrench (only if sealhead is not overtightened)
• Shock oil + seal kit (DHX2 compatible)
• Torque wrench or luggage scale
• Foot pump with balloon fitting (to eject the IFP)

Visit our Essential Tools page for these.

Use a compressor on the bleed port (after draining oil), or use a foot pump with a balloon adapter and tape to blow the IFP out from the reservoir. Cover it with a rag, it can shoot out fast.

• Depressurize the damper before opening
• Open the bleed port slowly to release trapped pressure
• Use the IFP Depth Tool guide to set depth accurately