This is the new Shimano SLX M670 10 Speed Hollowtech II Chainset part of the XTR-XT-SLX design cascade. It is a mountain bike chainset. Hollowtech II high provides the combination of rigidity and weight reduction. Shimano's latest and most advanced Hollowtech technology integrates the bottom bracket axle with right crank arm, for more rigidity and weight reduction. External bearings provide more pedal transfer and stability. Easy climbing thanks to 24T lower chain ring ensures plenty of climbing gear options for 29er bikes.

 

• All-mountain SLX HollowTech II chainset is tough and aggressive yet also lightweight and excellent value
• The HollowTech II Chainset features hollow forged crank arms which are both lightweight and rigid whilst being incredibly strong and durable
• HollowTech II integrated bottom bracket design uses a wide bearing placement with a large axle diameter for increased stiffness, efficiency and added durability
• Triple version comes with a drilled steel and carbon composite construction middle ring for excellent rigidity and durability
• 10-speed Dyna-Sys chainrings
• HG-X chainring with patented spike pins give smooth and fast gear shifts under load
• We recommend that the bottom bracket is initially installed by a bike shop to ensure perfect facing and fit
• For use with 10-speed HG-X MTB chains only
• Comes complete with both crank arms and Shimano bottom bracket for 68 and 73mm frames
• Crank arm length: 170mm
• Tooth range: 24 / 32 / 42T