
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.
Weight: 725g inc bottom bracket
Thin-walled forged aluminum crank, Lightweight & Strong
53t Hollow chainring, Lightweight & rigid
New tooth design, Improved chain contact for power efficiency
Revised seal design for BB adaptor, Smoother rotation and longer durability
53/39t rings
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