Discover the SRAM Apex AXS Wide Left Crank Arm and Power Meter Spindle Assembly the ultimate upgrade for serious cyclists seeking precise power measurement, reliability, and seamless integration. Designed for 12-speed drivetrains and featuring a sleek black finish, this power meter offers accurate, consistent wattage readings essential for training, performance tracking, and optimizing ride efficiency. Built with advanced Quarq technology and crafted from durable materials, the power meter module integrates discreetly within the DUB spindle interface, ensuring compatibility with most bike frames while maintaining a stealthy aesthetic. The long-lasting battery life of over 400 hours and IPX7 waterproof rating make this an ideal component for year-round training in all weather conditions. Compatible with SRAMs DUB bottom brackets (sold separately), this crank arm and power meter assembly delivers an efficient and reliable power measurement solution for competitive cyclists and serious enthusiasts alike. Elevate your riding performance with this innovative and high-performance power meter upgrade designed to meet the demands of modern cycling.