How to Use Our Bleed Fittings

All four fittings thread into the shock the same way. What changes is how the hose connects on the outlet side.

• X2 Standard — compression fitting, tightened with the included wrench.
• X2 Lite — The hose is pushed onto the fitting and glued in place.
• Float X Standard — compression fitting, tightened with the included wrench.
• Float X Lite — screws onto the tip of your own Shimano M5x0.8 brake bleed fitting.

Everything below applies to all of them unless a version is named.

These adapters are precision 3D printed parts. Although they are surprisingly durable in normal use, they should be handled more carefully than traditional metal bleed fittings.

• Do not overtighten.
• Avoid pushing or twisting sideways.
• Use gentle, controlled force during bleeding.
• When used correctly, the adapter can be reused many times.

Standard versions (compression fitting)

Push the supplied hose firmly into the press-fit barb. The hose was carefully selected after testing many different materials to provide an excellent fit.

• Push the hose straight in until fully seated.
• Install the compression nut afterward.
• It may appear slightly crooked at first—continue tightening straight and it will self-align.
• Once installed, it is best to leave the hose attached permanently.
• Repeatedly removing the hose may eventually break the printed barb.

X2 Lite (Du-Bro 241 barb)

• Push the hose all the way onto the barb until it is fully seated.
• Glue it in place so it cannot rotate free or weep under pressure.
• Treat it as a permanent connection—this is a one-hose setup.

Float X Lite (Shimano outlet)

• Screw your own Shimano M5x0.8 bleed fitting onto the tip of the adapter.
• Plastic and metal Shimano fittings both work.
• Connect your hose to that fitting exactly as you normally would for a brake bleed.
• There is no printed barb on this version, so the hose can be removed and refitted freely.

These are the bleed syringes we personally use during development and testing. The supplied hose fits perfectly, the compression fittings provide an excellent seal, and the kit also contains the Shimano fitting needed for the Float X Lite.

Recommended bleed syringe kit

• Thread the fitting in by hand.
• Tighten only enough for the O-ring to seal.
• Never overtighten. This applies to every version.
• On the Standard versions, the included wrench is mainly intended for assembling the hose. You may even remove it before installation if you prefer using only your fingers.
• On the Float X adapter, the O-ring creates the seal—not the threads—so very little tightening is required.
• Fox uses a special imperial thread on these ports. Never try to thread a generic brake fitting directly into the shock.

The seal is not hermetic, and it doesn't need to be:

• Push very hard on the syringe and a bit of oil may seep out around the fitting.
• Pull very hard and a few small bubbles may sneak past.

For normal stroking of the syringe and regular hand bleeding, it works perfectly — we're very happy with ours, and so are home mechanics using them all over the world.

These fittings are here to give you a simple way to push fluid through and get the air bubbles out of your shock — not to produce a perfect vacuum bleed. Again: this is not a shop tool, and not a substitute for a vacuum machine.

• Keep the syringe aligned with the fitting.
• Push and pull smoothly.
• Avoid twisting the fitting while operating the syringe.
• Never use the hose or syringe to apply side loads.
• Side loading is the most common cause of breakage.

Our original production adapter has now completed over 6 complete bleed procedures without any damage. During development, many prototypes were intentionally broken to optimize the wall thickness, print orientation, and overall design.

If the fitting ever breaks inside the shock, don't panic—it can usually be removed easily.

• Use the tip of a small knife, pick, or similar pointed tool.
• A small Torx T8 or Allen key can also be lightly tapped into the remaining piece to unscrew it.
• If the fitting was overtightened, removal may require a little more force.
• When installed correctly, this situation is very uncommon.

These adapters are precision 3D printed tools intended for suspension bleeding procedures. Overtightening, excessive force, or side loading may damage the adapter. By using this product, you agree to our Terms of Service.