The SRAM eTap AXS rechargeable battery powers compatible wireless derailleurs and RockShox Reverb AXS seatposts. Lightweight at 24 g, it charges in 60 minutes or less and is easy to swap.
The best cycling socks are more than a fashion statement: they are the direct link between your feet and your shoes, helping you stay warm in winter, cool in summer, and comfortable all year round.
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.