Shimano BB-UN300 Square Type Bottom Bracket Brand_Vittoria to fit any tubular rim

to fit any tubular rim and application

IAV Cycling Dynamics

Advanced shifting performance provides the confidence to enjoy any trail

Install in Seconds

Technical Specification

Shimano BB-UN300 Square Type Bottom Bracket Brand_Vittoria to fit any tubular rimSquare Type Bottom Bracket BB UN300 SHIMANO Square Type Bottom Bracket MTB Standard Structure Square Type Bottom Bracket FEATURES SHIMANO quality performance cartridge bearing square bottom bracket Better chainline stability with chain line stabilizer 3 structures available Standard, E type, chain case options Adapter material: Aluminum PRODUCT SPECIFICATIONS MODEL NO BB UN300 SERIES TOURNEY A070 Series Remarks * w Crank arm fixing bolts spec. only **