- AXS™ enabled for easy monitoring and firmware upgrades - Bluetooth Low Energy and ANT+ compatible - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride - Power balance measures left and right legs separately - Uses a common CR2032 battery that last for 200 riding hours and changes without tools - Power-upgrade compatible with the following RED® and Force eTap AXS™ cranksets: - RED 1x: 36T-46T, Force 1x: 36T-46T, Force 2x: 33/46, 35/48 Contents: - 1x SRAM Quarq AXS Powermeter Spider Road | LK 107 mm without crank arms and without chainring. - 8x Torx screws for spider mounting - 4x chainring bolts for 1-speed chainrings - 4x nut/cover for 1-speed chainrings - 4x chainring bolts for 2-speed chainrings