Note: Crank Only


Dynamic Chain Engagement+ - is a special gear teeth profile designed for use in single-chainring configurations for XC, enduro, and trail riding.
It gives more chain retention and smoother pedaling - even over bumpy terrain. Chain retention of any gear will reduce abrasion and worn out.

Hollowtech II - Providing the best balance of stiffness, strength, weight and rotating performance
The concept of Hollowtech II technology is focused on producing a superior crankset which will maximize a rider’s power transfer. The rigidity of the crankset ensures pedaling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances over which the rider needs to pedal more. Naturally, Shimano strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. HOLLOWTECH technology is an ultra-lightweight hollow crankarm created by Shimano with the company’s own proprietary forging technology that also maintains rigidity. The addition of HOLLOWTECH II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedaling stability, allowing for more efficient power transfer. 
The Hollowtech II crankset has been developed by pursuing the optimum balance of stiffness & rotating performance in a lightweight and beautiful crankset design. 
High Precision Sealing
Moreover, Hollowtech II crankset has a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods.


Special MTB gear teeth profile improves chain engagement and retention
Hollow forged crank maximises power transfer while limiting weight
Superior chain retention
Rigid and lightweight design boosts trail-riding enjoyment
Easier gearing than racing groupsets


Chain line (mm) 52
Chain ring combination 30T, 32T, 34T
Compatible BB type Outboard
Compatible chain HG 12-speed
Crank Arm Length 165 mm, 170 mm, 175 mm
Crank fixing bolt included Yes
Gear arms 4 arm
HollowTech II Yes
Optional Chain Guard Without chain/bash guard
P.C.D. (mm) Direct
Rear speeds 12
Recommended BB - Pressfit BB-MT800-PA
Recommended BB - Threaded (normal) BB-MT800
Threaded BB Shell Width 68 mm, 73 mm
Q-factor (mm) 172

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