American Bottom Bracket Hop Up Kit Size:American w/19mm Spindle CNC machined from 6061 aluminum

CNC machined from 6061 aluminum with a hollowed-out center section to reduce weight

165mm steerer tube

14mm heat-treated hollow chromoly male axle with allen key broach

Can be used for RHD or LHD

Clearance for larger tires

American Bottom Bracket Hop Up Kit Size:American w/19mm Spindle CNC machined from 6061 aluminumPerfect 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.