The bontrager xr4275 team issue 275 tyre your go to mountain bike tyre for loose rocky rough trails wet or dry the xr4 team issue tlr mountain bike tyre is designed to out corner any xc tyre on the market with aggressive tread design deep lateral cupped blocks long shoulder blocks and buttressed tread block edges inner strength protection plus tubeless ready for fewer flat tyres lower pressure capability bontrager xr4275 team issue 275 tyre f