Muc-Off Ultimate Tubeless Setup Kit for X-Country

This kit is specifically designed for cross-country mountain bike rims with an internal width between 23 and 25 mm. If your rim width falls outside this range, the included tape may not provide a proper seal or fit correctly.

The kit comes with everything you need for a full conversion: one 10-meter roll of 25 mm tubeless rim tape, two 44 mm CNC-machined black tubeless valves, and two 140 ml pouches of No Puncture Hassle Tubeless Sealant.

Converting to tubeless allows you to run lower tire pressures, which significantly improves traction and comfort on the trail. It also eliminates the risk of pinch flats, as there is no inner tube to get pinched between the rim and the tire.

The included valves are 44 mm in length, which is a standard size for most cross-country mountain bike rims. However, if you have exceptionally deep-section rims, you may need a longer valve stem to ensure the pump head can attach securely.

While the sealant is highly effective at plugging punctures, it will eventually dry out over time. We recommend checking your sealant levels every 3 to 6 months, depending on your local climate and how often you ride, to ensure you maintain optimal protection.