This sleek aerodynamic Dura-Ace Hollowtech II crankset features significant weight saving and increased rigidity through the use of a 20% stiffer chainring, resulting in optimal shifting & power transfer.
Thin-walled forged aluminum crank | Lightweight & Strong
Hollow chainring | Lightweight & rigid
New tooth design | Improved chain contact for power efficiency
Revised seal design for BB adapter | Smoother rotation and longer durability