Remove the needle when the puncture faces downward. Spin the wheel 4–5 rotations and check for bubbles near the valve.

If pressure drops without bubbles, check/top up sealant (~20 hours guideline; varies).

Yes. Release pressure at the valve and unseat the tire bead slightly. Add sealant, reseat, inflate the tube to 7.5 bar and the tire to your desired pressure.

Yes. There are sealants that work down to about -10°C and -20°C. Works well with studded tires.

Yes, tested on SUR-RON, trial and speedway. Sizes for 16/18/19/21" exist, with more coming.

Note: some minibikes use a 1.40x19" front rim that won’t fit; many use 1.60x19" which does fit.

In most cases, yes. Typically fits front rims from 1.60x19" up to 21", and 16/18/19 up to 2.15 width (model dependent).

1. Deflate the valve.
2. Release tire pressure (unseat beads both sides).
3. Use two tire irons close together; keep the system on the rim.
4. Work around and remove the rim from the tire.
5. Reinstall and don’t forget sealant.

Tube: 7.5 bar / 110 PSI (check at least weekly, ideally every ride day).

Tire: often 0.65–0.85 bar depending on preference and tire.

Let a bit of pressure out before truing spokes. The tape uses intentionally lighter adhesive so nipples won’t “glue”.

Yes. Keep tire irons close and come out on the other side so it comes off as one “package”. If the tube gets pinched, replacement is recommended.

Align the needle over the valve, puncture in a controlled way. Remove when the puncture faces down, spin, and check it seals.

• 3 thin tire irons
• Tire paste (or sealant as lube)
• Bead Buddy
• Pump capable of 7.5 bar / 110 PSI + gauge
• Needle valve (in kit)

Pressure loss before riding: the tube may have been pinched during installation. Keep the tube centered in the blue sleeve.

Pressure loss after riding: check tube pressure at 7.5 bar. Below 6.5 bar the tire can rotate on the rim and stress the valve.

Measuring: you often lose a little air when attaching a pump/gauge. Fill to 7.5 bar and disconnect. A quick-connect head is recommended.

Simple cause: the O-ring in the valve core may be damaged. Deflate and replace the valve core (common MTB type).

If no pressure builds, you may have missed a larger damage. Spin the wheel a few turns to distribute sealant, then pump again.

Tip: start around 0.75–0.8 bar and work down if needed.

Often sealant from a previous tire got under the system and is pushed out through spoke nipples when pressurized. Just wipe it off.