SHIMANO BB-UN300 SQUARE TAPER 68mm BSA BOTTOM BRACKET Axle Length:107mm Aluminium forged (caliper)

Aluminium forged (caliper)

while great piston retraction increases pad to rotor clearance

it was adopted by mountain-bikers too and can be seen on both the trail and the daily commute

40mm of cut marks on each side allow for easy width customization

Bosch smart system

SHIMANO BB-UN300 SQUARE TAPER 68mm BSA BOTTOM BRACKET Axle Length:107mm Aluminium forged (caliper)Shimano BB UN300 Square Taper bottom bracket for cranks with JIS Square Taper mounting. Suitable for frames with BSA thread 68 mm housing width. Features SHIMANO quality performance cartridge bearing square bottom bracket Better chainline stability with chain line stabilizer Standard, E type, chain case options Adapter material: Aluminium Specification Model: BB UN300 BB Type: Square Taper Threaded: BSA Threaded BB shell width: 68mm Axle Length 107mm