How to use our pellet retainer tools.

Pellet Retainer Tool for Needle-Style Air Fill Systems

A dedicated tool designed to safely reseal MTB dampers that use needle-style air fill systems instead of Schrader valves. It allows controlled tightening of the rubber pellet while the needle is still installed, ensuring proper sealing at very high internal pressures.

⚠️ Critical Safety Warning

These shocks are highly pressurized systems and can be dangerous.

  • Never remove the needle without fully securing the pellet.
  • Some FOX shocks (DPS, Float SL) can reach up to 500 psi.
  • That pressure can eject oil, air, or parts forcefully.
  • Always wear eye protection.
  • If unsure, stop.
What This Tool Is

A specialized tool for resealing dampers that use needle-style IFP or bladder air pressurization.

It uses a 4 mm Allen drive with a center hole, allowing the needle to pass through while tightening the pellet that seals the system.

What It Does

Used on MTB shocks that do not use Schrader-style ports (Bomber CR, DPX2, Cane Creek, etc.). These systems rely on a rubber pellet pierced by a needle to fill the reservoir.

  • Allows needle insertion through the center
  • Lets you tighten the pellet while pressure is applied
  • Seals reliably against 100–500 psi
  • Prevents leaks after needle removal
Versions Available
  • Plastic Version
    Suitable for Cane Creek and other soft-pellet shocks. Includes two tools. Lower cost.
  • Metal / Composite Version
    Required for certain FOX and Marzocchi shocks or pressures above 150 psi.
DIY Pellet Retainer Option

You can also make your own tool using a 4 mm Allen key and a Dremel.

How to Make My Own Pellet Retainer Tool

Why You Might Need It
  • Required for FOX shocks due to very high IFP pressures (up to 500 psi)
  • Not needed for EXT, Öhlins, or PUSH shocks due to low damper pressures and high-quality pellets
  • Plastic version is not suitable for FOX or Marzocchi shocks over 150 psi
How to Use It
  1. Loosen the 4 mm Allen screw on the pressurization port.
  2. Insert the pellet retainer tool.
  3. Insert the needle through the center hole.
  4. Tighten until light resistance is felt.
  5. Lightly pressurize and check for leaks.
  6. Fill to target pressure.
  7. Tighten until the needle becomes hard to pull out.
  8. Pull the needle while preparing to tighten slightly.
  9. A brief hiss is normal.
  10. Compress the shock to confirm smooth return.

If rebound is extremely slow, retry pressurizing.

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Disclaimer

⚠️ This tool is intended for experienced amateur users working with needle-pressurized dampers. Incorrect use can cause air loss or damper damage. By using this tool, you agree to our terms of service.