Chris King Thread Fit T47 24x Bottom Bracket With Fit Kit 4Durable and Silent If you're looking for a top-tier bottom bracket for your bike, then look no further than Chris King. The Chris King Thread Fit T47 24x Bottom Bracket provides the security and reliability of a threaded bottom bracket with the stiffness and power transfer gains of a Press Fit 30 bottom bracket shell. The included Fit Kit #4 is designed to mate the Thread Fit T47 24x bottom bracket with a 24mm spindle. Features Thread Fit T47 24x will fit 68mm and 73mm shell widths with 24mm spindles Made-in-house bearings so you know they're freshly baked and never stale Designed and built to be durable, serviceable, and silent Fit Kit #4 is designed to mate the Thread Fit T47 24i bottom bracket with a 24mm spindle | Chris King | Threadfit T47 24X Bottom Bracket With Fit Kit 4 T47 For Shimano Hollowtech Ii Black