NEW Shimano ZEE FC-M640 Crankset 175mm, height_5ft-10in Safe on all parts and

Safe on all parts and surfaces including carbon fiber

5cm effective top tube -> fits 5'1" - 5'7"

Ceramic pistons with included metallic brake pads

ages of 2-7 years old and features the same safety and technology as the adult helmets

NEW Shimano ZEE FC-M640 Crankset 175mm, height_5ft-10in Safe on all parts andShimano ZEE FC M645 M640 Crank Bottom Brackets Sets Thick wall aluminum construction Reinforced steel axle with 30% greater stiffness compared to Trail designated crank options Steel pedal inserts Includes SM BB52 68 73 bottom bracket BB Included: Yes BB Shell Width (mm): 68 BB Shell Width (mm): 73 BB Frame Interface: English Chainring BCD: 104 Color: Black Crank Intended Use: Mountain Crank Length (mm): 175 Defined Color: Black Drivetrain Speeds: 10