Shimano SLX M7100 12 Speed CranksetBuilt with hollow forged alloy crank arms for attacking rough and technical mountain bike (MTB) trails with ease, the SLX M7100 12 Speed Crankset brings you outstanding durability, efficient power delivery and a low overall weight. Ready to help you to dominate every descent, Shimano supplies this model without a chainring, so you can add your personal tooth count preference.Features: Material: Hollow forged Alloy crank arms Use: MTB Speed: 1x12-Speed compatible Chainring Size: N/A, sold separately Bolt Circle Diameter (BCD): Direct mount Crank Arm Length: Various options available Q-Factor: 172mm Chainline: 52mm Compatible Chain: N/A 4 Arm or 5 Arm: N/A, direct mount Includes both crank arms Recommended Bottom Bracket: Pressfit: BB-MT800-PA; Threaded: BB-MT800 Bottom Bracket Included: No Chainring Included: No Weight: 646g (with 34T fitted) 631g (with 32T fitted) 634g (with 30T fitted)Technologies: Hollowtech II: The addition of Hollowtech II technology integrates the bottom bracket axle with the right crankarm for more stiffness and weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedalling stability, allowing for more efficient power transfer. The Hollowtech II crankset has been developed by pursuing the optimum balance of stiffness and rotating performance in a lightweight and beautiful crankset design. Moreover, Hollowtech II crankset has a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periodsA 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.