The SLX FC-M7120-1 crank features an entirely new construction, using direct mount chainrings, special gear tooth profile for improved chain retention, and a 172mm Q-factor.
Shimano Dynamoc Chain Enagagment+ Shimano Dynamoc Chain Enagagment+ is a special gear teeth profile designed for use in single-chainring configurations for XC, enduro, and trail riding. It gives more chain retention and smoother pedaling - even over bumpy terrain. Chain retention of any gear will reduce abrasion and worn out.
Casing width: 68/73 mm
Special MTB tooth profile improves chain guidance and control
Hollow crank ensures maximum power transmission with simultaneous weight reduction
Particularly powerful chain guide roller
Stiff and light as a feather design ensures great fun on the track