Durable bottom bracket with a heat-treated chromoly 12-spline spindle, designed for demanding riders. Compatible with English-threaded 68mm shells and PowerSpline cranks.
Engineered for racers, the 425g ultra-lightweight carbon crank and 7075 aluminum spider deliver ±1% power accuracy and ultra-high stiffness. With 330-hour battery life, 4 key metrics, and Bluetooth/ANT+ connectivity, it’s built to dominate.