Shimano BB-ES300 Bottom Bracket Puncture_Repair Smooth to avoid mud sticking

Smooth to avoid mud sticking whilst also having a tacky feel to keep your hands just where you want them

with its gravel specific ergonomics

Because who said XC had to be so serious

The inner diameter of your steerer tube must be at least 24

Shimano BB-ES300 Bottom Bracket Puncture_Repair Smooth to avoid mud stickingShimano BB ES300 Bottom Bracket Splined bottom bracket for use with Shimano Octalink chainsets. Features: Oversize BB spindle large 22 mm diameter hollow cold forged chrome moly pipe billet spindle reduces weight, increases strength and rigidity Octalink splined axle crank arm interface results in more rigid crank assembly compared to square tapered spindle Sealed cartridge assembly with oversize ball bearings maintenance free high efficiency rubber