This Shimano SLX M660 Triple Chainset uses a small 22 tooth inner ring and is designed for all mountain use.

Key Features of the Shimano SLX M660 Triple Chainset:

• 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
• Double version comes with a honeycomb style bash guard which has been developed to absorb impacts
• Triple version comes with a drilled steel and carbon composite construction middle ring for excellent rigidity and durability
• Mega9 HG chainrings for optimum shifting performance
• SG-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
• Two tone anodized finish for long lasting good looks
• Available as FC-M660 triple: 44/32/22 tooth or FC-M665 double with bash guard: 36/22 tooth
• Comes complete with bottom bracket for 68 and 73 mm frames