Shimano CS-R8000 Ultegra 11Spd 11-32T Cassette cross-country K-EDGE Boost Mount is the

K-EDGE Boost Mount is the ideal fit over very short stems with steep upward stem angles

this patent pending valve sets a new standard and is the benchmark in high air flow tubeless tyre systems with a revolutionary ‘Straight through’ internal design for  maximum airflow fire power

Compatible chain: HG 9-speed

Tune the pedal height with removable traction pads(1 and 2mm supplied) and pins

Battery Life CR2032*1

Shimano CS-R8000 Ultegra 11Spd 11-32T Cassette cross-country K-EDGE Boost Mount is theSystem engineered for use with the SHIMANO ULTEGRA R8000 groupset, the R8000 cassette is available in a wide range of road and mixed surface ratios. It is compatible with HG EV and HG X11 chains.