This rigid and lightweight model delivers a smooth driving experience as you weave your way around the trails, even when riding over rowdy terrain conditions. Furthermore, its forged aluminium crank arm construction and steel inner chainring deliver a top-level strength to weight set-up. This is the perfect choice of upgrade for completing your dream bike build and getting the best performance out of every off-road adventure. Technologies: Hollowtech II:  The addition of Hollowtech II technology integrates the bottom bracket axle with the right crankarm for more stiffness and weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedalling stability, allowing for more efficient power transfer. The Hollowtech II crankset has been developed by pursuing the optimum balance of stiffness & rotating performance in a lightweight and beautiful crankset design. Moreover, Hollowtech II cranksets have a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods.