BORDEAG 7/8/9 Speed Crankset, Bicycle Crank Set, 170 mm Crank Length, 42-32-22 Teeth, Aluminium Alloy Crank Arm for Speed Mountain Bike, Black

Durable materials: the chain wheel set is made of high-quality carbon steel, which is hardened at high temperatures, chain wheel set to give them high precision and hardness, which makes it shatter-proof and ensures a long service life. Ideal bicycle accessories: crankset for mountain bike is 42/32/22t triple chainring design. Crankset narrow wide teeth for better chain retention. Chainring numbers: crankset for mountain bike is 42/32/22t triple chainring design. Crankset narrow wide teeth for better chain retention. Compatible: the chainwheel set is compatible with 7/8/9-speed chain, bicycle crank set matching bottom bracket specification for chain line 170 mm. Cassette compatibility: crankset perfectly matched to 9-speed, backwards compatible with 7-speed/8-speed. Mountain bike crankset is lighter than traditional MTB, track road bike, fixed gear bicycle, folding bike.