For 29 inches Wheel. The XC11-29er is a lightweight removable rear fender designed for exceptional mud/spray protection and built specifically for 29er mountain bikes. Multiple pivots allow for easy fender angle adjustment while the quick release clamp adjusts to fit 25.4, 34.9 mm seatposts. Advanced high impact plastic is co-molded to a flexible trailing edge for resistance to impacts while the highly polished underside of the fenders prevents dirt buildup in extreme muddy conditions. Fits MTB 29 inches tires up to 29 inches x 2.5 inches.