Chris King® THREADFIT™ 30 Bottom Bracket

Built on the familiar BSA threading, the ThreadFit™ 30 is reliable. A silky smooth, long-lasting bottom bracket built around our angular contact bearings that wear in instead of out. The ThreadFit™30 is made for 30mm spindles.

Fully serviceable and backed by our lifetime king warranty, this bottom bracket will outlast your bike. Built to ultra tight aerospace tolerances we use machined Delrin spindle sleeves to create a perfect, and precise, fit between cranks and frame, providing ultra low drag, and a butter smooth feel. 

ThreadFit™30 is ready for a wide selection of cranks.

• Engineered, manufactured and assembled in Portland, Oregon USA
• King Lifetime Warranty
• Legendary made-in-house bearings
  
• Responsibly lightweight
• Easily serviceable with our integrated grease injection system
• Find your fit with our required conversion kits
• Ceramic bearing upgrade available
• Uses Chris King bottom bracket cup tool for installation