Shimano BB-UN300 Bottom Bracket - English 73 x 118mm Spindle Square Taper JIS MFPN=00.4118.421.058 Swinging hinge design saves space

Swinging hinge design saves space when not in use

Unique groundbreaking design integrated with SRAMs medal winning carbon crank design

5+ Offset 44 External Adjustments High Speed Compression Damping External Adjustments Rebound Damping Defined Color Black Positive Spring Air Axle to Crown Length 505 Front Axle 15mm Thru x 110mm Stanchion Diameter 32 Maximum Tire Width 68 S

Welded seams at cuff and hem for maximum comfort

Shimano BB-UN300 Bottom Bracket - English 73 x 118mm Spindle Square Taper JIS MFPN=00.4118.421.058 Swinging hinge design saves spaceShimano BB UN300 Bottom Bracket English 73 x 118mm Spindle Square Taper JIS. Shimano BB UN300 Square Spindle Bottom BracketsFits JIS square taper cranksets Crankarm fixing bolts sold separately Hollow spindle TECH SPECS Bottom Bracket Shell I. D. 1. 37 BB Frame Interface English BB Shell Width (mm) 73 Spindle Interface Type Square Taper JIS Spindle Length 118 Defined Color Black