SHIMANO BB-UN300-E E-Type Bottom Bracket - 68 x 122.5mm - BSA - Square Taper Compatio_Enriched Weather-resistant softshell fabric on the

Weather-resistant softshell fabric on the outside defends against wind and water

Oil: Shimano Mineral

compared to previous GP5000 versions

Designed to carry two bottles or accessories off of one B-RAD base

antibacterial

SHIMANO BB-UN300-E E-Type Bottom Bracket - 68 x 122.5mm - BSA - Square Taper Compatio_Enriched Weather-resistant softshell fabric on theSHIMANO Square Type Bottom Bracket MTB Standard Structure Square Type Bottom Bracket 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