SRAM SB RIVAL AXS 12SPD RIGHT SHIFT/REAR BRAKE FLAT MOUNT D1Wireless shifting and the best hydraulic disc braking anywhere, plus revolutionary eTap shift logic. What more could you want? While we could have stopped there, we went further and optimized the hood shape to fit hands of all sizes, for comfortable and controlled braking from any position. AXS technology means personalization is in your hands. Features AXS enabled for easy personalization Wireless electronic eTap shift logic for intuitive shifting,