BONTRAGER BACKRACK MIK Size:M/XL The reversible valve head fits

The reversible valve head fits both Presta and Schrader valves

Seatpost Material: 6061 aluminium

Contour Relief Zone Plus (CRZ+) full saddle cut-away enhances soft tissue protection

If you damage your wheels while riding in the first two years of ownership

Unlock the speed and performance of a carbon wheel upgrade with Aeolus Elite 35 TLR

BONTRAGER BACKRACK MIK Size:M/XL The reversible valve head fitsRack 'em up Turn your ride into a pedal powered grocery getter with the BackRack MIK. It is designed to mount to eyelets already built into your frame, so installation is easy. Plus, it has MIK compatibility so you can mount MIK boot bags or accessories securely and in seconds, along with integrated threaded accessory eyelets for added functionality and easy light installation. Features Quick and easy installation adds storage and utility to