SHIMANO XT FC-M8120 BOOST 12-SPEED CRANK WITHOUT CHAINRING Size:175mm Optical Gear Display: Yes

Optical Gear Display: Yes

Torx T25 tool

The Ultralight™ Olive Green and Black comes with a Black/Silver Powa Elite™ valve and a Black metal nose clip 
and carry bag

Designed for alloy rims

SHIMANO XT FC-M8120 BOOST 12-SPEED CRANK WITHOUT CHAINRING Size:175mm Optical Gear Display: YesThe Shimano XT FC M8120 1 x 12 speed Boost crank with 178 mm Q factor, 55 mm chainline and 148 mm O. L. D stands for highest drive efficiency at low weight. It offers optimum power transmission and maximum speed for the new XT system, which only use 1 chainring. Features FC M8120 1 Q Factor 178mm Chain line: 55mm O. L. D 148mm (Boost) Compatibility 1x12 speed with CS M8100 cassettes 10 45 and 10 51 Mounting system Direct mount (Lighter and stiffer