BENEFIT
Lightweight crankarm design optimized for power-transfer efficiency
FEATURE
Minimal weight without sacrificing stiffness
TECHNOLOGY
HOLLOWTECH II
BENEFIT
Rider-tuned gear performance through various gear combinations
BENEFIT
Redesigned FC for greater frame compatibility
FEATURE
Wider gear pitch increases clearance between chain and leading teeth, providing compatibility with frames of O.L.D. 135 mm and 410 mm chainstay length