Bolany Mountain Bike Crankset Hollow Pedivela Integrado Crank 170MM 104BCD 34 36T Aluminum Alloy MTB Bicycle Crank Chainring

Model: Mountain Bike Crankset

Crank Length: 170mm

Crank Material: 6061 T6 Aluminum Alloy

Spindle Material: 7075 Aluminum Alloy

Surface Treatment: Blasted anodized

Chainring Specifications: 34T/36T (Chainring Diameter)

Support Speed: 8S-12S

Spindle Diameter: 24mm

Bottom Bracket ：BB91

Hollow one-piece crank, positive and negative chainrings, aluminum alloy material, forged molding, fine workmanship, providing strength and rigidity

The shaft is made of chrome-molybdenum steel, the stability of the crank and the hollow shaft is improved, and the overall feeling is stronger

AL6061 ultra-light aviation aluminum alloy material provides strength and rigidityFrosted anodizing processThe new cutting position, high flatness, the tooth is installed flat and does not deviate

BB91 threaded central shaft, built-in bearing, high lubricity, smooth pedaling, noise reduction, precision, durability, waterproof, strong and more secure.

The length of the original central axis is 68MM, and after expansion, it is 110MM