Shimano's HOLLOWTECH II Super Boost crank construction offers a lighter and stiffer crank design with a 181mm Q-Factor and a 56.5mm chainline. Chainrings are easily exchanged with the new direct-mount system and the cranks can be swapped between single and double front chainring setups. All Shimano 12-speed direct mount chainrings are interchangeable.
This crankset is made specifically to fit 12x157mm Super Boost frames with a 56.5mm chainline.
|Chainring Mount:||Shimano Direct Mount|
Specs subject to change without notice. Please check with manufacturer for the most up-to-date information.
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