Shimano BB-UN300 Bottom Bracket - English, 68 x 122.5mm Spindle, Square Taper JIS, 50mm Chainline

Available from Good Weather Bicycle when we last checked. Sold from the shop’s own store; the price there is the one that counts.

Shimano BB-UN300 Square Spindle Bottom Brackets Fits JIS square-taper cranksets Crankarm fixing bolts sold separately Hollow spindle 50mm chainline Specifications Brand: Shimano Model: BB-UN300 Bottom Bracket MPN: EBBUN300B23X Spindle Interface Type: Square Taper JIS BB Shell Width (mm): 68 Bottom Bracket Shell I.D.: 1.37 Spindle Length: 122.5 Defined Color: Black BB/Frame Interface: English