2-speed, DUB, Powermeter, without bottom bracket, black 12-speed compatible, aluminum crank arms, aluminum chainring set for direct mounting, chainline 45 mm, Bluetooth and ANT+ wireless technology, power measurement on left crank arm, Micro AAA lithium battery, waterproof according to IPX7 Number of chainrings 2 Article main color black Large chainring 48 T. Small chainring 35 T. Chainline 45.0 mm Crank arm length 170.00 mm System compatibility 12-speed Bottom bracket DUB Variation Groupset The SRAM Rival Power Meter E1 crankset is SRAM's most advanced aluminum crankset, now with highly accessible power measurement. It provides accurate data integrated into a light, stiff, and strong crankset, equipped with the advanced X-Range shifting system. This ensures a wide range, smaller steps between gears, and a more efficient gear ratio. Power measurement in the spindle measures power on the left side and calculates the total wattage Long battery life (over 400 hours) – enough for a full cycling season User-replaceable AAA lithium battery DUB bottom bracket for extra durability and easy installation Waterproof (IPX7 – up to 1 meter deep for 30 minutes) Lightweight (less than 40 grams heavier than a standard crankset) Enables sharp and precise shifting Integrated one-piece chainrings for optimal stiffness and performance SRAM Article number: 737913 EAN code: 710845916236 Supplier number: 00.6118.745.009 Retail packaging: Yes