Shimano BB-UN300 Bottom Bracket - English 68 x 122.5mm Spindle Square Taper JIS 47.5mm Chainline CheckoutTitle=FOX Tooling Kit - Custom Spanner Socket Bar Clamp Diameter (mm) 21

Bar Clamp Diameter (mm) 21

BB Included No Chainline/Hub Compatibility 135/142 Road Disc Hubs < 415 mm Chainstay Chainline/Hub Compatibility 141/148 Boost Hubs Chainring BCD Direct Mount SRAM Color Iridescent Gray Crank Intended Use Road Crank Intended Use Gravel Crank Length (mm) 175 Defined Color Gray Drivetrain Speeds 12 Pedal Spindle 9/16" Rings 40 Spindle Interface Type SRAM DUB keyword search AXS

Leading edge steps for fast rolling (like a ramp) but better climbing in technical terrain at slow speeds

All the key functionality features of high end 1x derailleurs are built in

Intended use: hardpack loose over hard

Shimano BB-UN300 Bottom Bracket - English 68 x 122.5mm Spindle Square Taper JIS 47.5mm Chainline CheckoutTitle=FOX Tooling Kit - Custom Spanner Socket Bar Clamp Diameter (mm) 21Shimano BB UN300 Bottom Bracket English 68 x 122. 5mm Spindle Square Taper JIS 47. 5mm Chainline. 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) 68 Spindle Interface Type Square Taper JIS Spindle Length 122. 5 Defined Color Black