Sram crankset red axs e1 crankset pm red axs e1 37 50t 167.5mm

2-speed, DUB, without bottom bracket, 12-speed compatible, hollow carbon cranks, direct mount aluminum chainring, 45mm chainline, Bluetooth and ANT+ transmitter technology, LED indicator for ready-to-use, reset, and low battery status, accuracy: +/- 1.5%, dual-sided measurement, tool-free battery change (CR2032) Number of Chainrings 2 Crank Length 167.50 mm Primary Color black Large Chainring 50 inch Small Chainring 37 inch Chainline 45.0 mm Secondary Color grey System Compatibility 12-speed Bottom Bracket DUB Type/Article Type Crankset Variation