Shimano BB-UN300 Square Taper Bottom Bracket - 68x118mm ENVEMARCH make accurate adjustments to gears

make accurate adjustments to gears or derailleur (even while pedaling) and carry out any kind of diagnostic check

With the latest Souplesse Carcass construction that integrates Tubeless Easy technology in the most progressive way

Gone are the days of skin-less knuckles

With the AM30

the tire bed is free of spoke holes

Shimano BB-UN300 Square Taper Bottom Bracket - 68x118mm ENVEMARCH make accurate adjustments to gearsThe 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