Shimano bottom bracket UN26 compatible to cranksets with square axle profile. Sealed cartridge design provides maintenance-free usage and high performance, while rubber seals protects from dirt, mud & water.
Shell width: 70 mm
Axle length (OPTIONAL): 113 mm OR 122.5 mm
Axle type: square tapered (JIS)
Bottom Bracket Cup: plastic (left), steel (right)
Weight: ~ 355 g