Designed with lightweight performance in mind these inserts offer pinch flat protection while the air channel aids in improving rolling efficiency and reduces tyre rebound.

• application: Cross Country & Trail (front and rear), heavy duty trail & enduro (front only)
• Low weight 58g (29er, per insert)
• Suits 27.5” or 29” 2.2-2.4” tyres
• For rims with a minimum 25mm internal, max width is 42mm
• Sold individually
• Valves not included

Studying how pinch flats occur and how tyre inserts interact with the tyre and the rim, Tubolight moved material right where it needs to be, over and outside of the rim bead. The portion over the rim bead is increased by 30% to 60% depending on rim width, and together with a harder compound, rim hits are drastically reduced. The super tight fitting is retained because that’s an incredible bonus for added lateral stability and avoiding tyre burp.

Air Channel

The air channel between the insert and rim acts like a valve and during a shock, some of the air inside the tyre moves from the outer portion of the insert into the channel, causing a difference in pressure. As the insert is very tight on the rim, this air gets trapped and takes a fraction of time longer to re-establish even pressure between the outer and inner portion.

That means, in the real world, rolling resistance and tyre rebound are reduced.  These two features combined give what every rider is looking for: EFFICIENCY.