Shimano Dura-Ace HOLLOWTECH II Double Crankset FC-7900 (2014)

Thin-walled forged aluminum crank | Lightweight & Strong
Hollow chainring | Lightweight & rigid
New tooth design | Improved chain contact for power efficiency

Description

This swish aerodynamic Dura-Ace Hollowtech II crankset options important weight saving and higher tension thru using a 20% stiffer chainring, leading to top-quality transferring & energy switch.
Skinny-walled solid aluminum crank | Light-weight & Robust
Hole chainring | Light-weight & inflexible
New teeth layout | Stepped forward chain touch for energy potency
Revised seal layout for BB adaptor | Smoother rotation and longer sturdiness

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