SHIMANO BB-UN300 Bottom Bracket - 68 x 117.5mm - Square Taper wahoopromo and waterproof anti-microbial microfiber cover

and waterproof anti-microbial microfiber cover

Rack Mounts not compatible with child seats

Designed and made in the USA

Use for both 1x and 2x eTap AXS

and the side knobs are angled and stepped to provide great biting traction in corners

SHIMANO BB-UN300 Bottom Bracket - 68 x 117.5mm - Square Taper wahoopromo and waterproof anti-microbial microfiber coverSHIMANO 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