Shimano's thoroughbred XTR M985 Crankset is centered around their first-ever two-ring off-road racing crank, which comes in carefully calculated CloseStep gear combinations to match riders' individual style, terrain, and horsepower. With 38-, 40- and 42-tooth Primary Driving Gear choices-the only factor limiting how fast you can go is how much power you can produce.
Lengths: 170, 172.5, 175 or 180mm
Chainrings: 30x42, 28x40 or 26x38
Weight: 705 g.(30x42, 175mm)
BB cups included