Shimano UN300 Bottom Bracket 68 x 113mm 

Established in 1921, Shimano today globally operates three key businesses,
with sales offices and factories all over the world.
We will continue supplying “captivating products” to help promote the bicycle and sports fishing cultures.

Shimano UN300 Bottom Bracket 68 x 113mm 

SHIMANO - 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