American Bottom Bracket Hop Up Kit Size:American w/19mm Spindle Chain: KMC S1

Chain: KMC S1

the new molded heel counter and internal tongue straps lock in your feet

2 campy-spec precision-sealed cartridge bearings

beefy 4130 chromoly female axle with alloy cones and 3/8" chromoly bolts

American Bottom Bracket Hop Up Kit Size:American w/19mm Spindle Chain: KMC S1Perfect for upgrading from 1 piece cranks to 3 piece cranks or for converting your unsealed 3 piece crank setup to a sealed one. Designed specifically to work with 3 piece sealed bearing cranks on frames utilizing an American bottom bracket shell. Includes 2 precision sealed bearings, aluminum cups, high density plastic cone spacers, center tube spacer, sprocket adapter, plenty of adjustment washers, a 19mm 8 spline spindle and 2 spindle bolts.