Shimano BB-UN300 Bottom Bracket - English, 68 x 118mm Spindle, Square Taper JIS Shimano GRX 800 The Shimano Tourney drivetrain provides

The Shimano Tourney drivetrain provides smooth and reliable shifting performance

10mm syringe of grease

Despite its more affordable materials

For use with the 11 speed clutched derailleur fits 11-32 cassettes

Defined Color: Multi-Color

Shimano BB-UN300 Bottom Bracket - English, 68 x 118mm Spindle, Square Taper JIS Shimano GRX 800 The Shimano Tourney drivetrain providesShimano BB UN300 Square Spindle Bottom Brackets Fits JIS square taper cranksets Crankarm fixing bolts sold separately Hollow spindle Spindle Interface Type: Square Taper JIS BB Shell Width (mm): 68 Bottom Bracket Shell I. D.: 1. 37 Spindle Length: 118 Defined Color: Black BB Frame Interface: English