Shimano BB-UN300 Bottom Bracket - English 68 x 110mm Spindle Square Taper JIS

Upgrade your bicycle's performance with the Shimano BB-UN300 Bottom Bracket, designed specifically for English 68 x 110mm shell frames with a Square Taper JIS spindle interface. This high-quality bottom bracket ensures a secure fit for JIS square-taper cranksets, providing smooth and reliable pedaling efficiency.

• Compatible with JIS square-taper cranksets for precise alignment and durability
• Crankarm fixing bolts are sold separately, allowing customization to your setup
• Features a hollow spindle that reduces weight while maintaining strength