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, featuring the advanced X-Range shifting system. This ensures a wide range, smaller steps between gears, and a more efficient gear ratio.Spindle-based power meter measures left-side power to calculate total wattageLong battery life (over 400 hours) - enough for a full cycling seasonUser-replaceable AAA lithium batteryDUB bottom bracket for added durability and simple installationWaterproof (IPX7 - up to 1 meter deep for 30 minutes)Lightweight (less than 40 grams heavier than a standard crankset)Enables crisp and precise shiftingIntegrated one-piece chainrings for optimal stiffness and performanceSram Article number: 737914 EAN code: 710845916243 Supplier number: 00.6118.745.010 Retail packaging: Yes