For modern disc-brake bikes, SHIMANO E-THRU axles offer ease of use and secure wheel retention thanks to quality materials and SHIMANO's internal cam mechanism.
Shimano BT-DN300 internal lithium-ion battery for compatible 12-speed Di2 drivetrains, including Dura-Ace, Ultegra, 105 and GRX. Features three SD300 ports, 500 mAh capacity and 7.4 V output.
Shimano SM-SH51 SPD cleats feature a single-release design that disengages by twisting the heel outward. Compatible with supported Shimano SPD pedals and two-bolt cycling shoes for mountain biking, gravel and commuting.