Shimano BB-UN300 Square Taper Bottom Bracket - 68x122mm BF Apparel Affixes with either straps or

Affixes with either straps or braze-ons

If you are considering our Ultegra 8000 chainring to replace your original chainring for other 110 BCD (4-bolt) asymmetric crankset design (Ultegra 6800 or similar)

The saddle's position can be precisely adjusted via a secure two-screw clamp

Multishifting technology for the rear derailleur lever

Shimano BB-UN300 Square Taper Bottom Bracket - 68x122mm BF Apparel Affixes with either straps orThe quality and performance oriented Shimano BB UN300 cartridge bearing bottom bracket features a JIS square taper mount and is designed for frames with BSA thread and 68 mm shell width. A stabilizer ensures a constant chain line. Specifications Adapter: aluminum (left), aluminum steel (right) Axle: steel Mfr Claimed Weight TBC