Chris King® ThreadFit™ 30 Bottom Bracket (Brompton Upgrade)

Chris King® ThreadFit™ 30 fits 30mm and DUB spindle cranks in BSA bottom bracket shells.

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.

– Engineered, manufactured and assembled in Portland, Oregon USA
– King Lifetime Warranty
– Legendary made-in-house bearings
– Available in 9 beautifully anodized colors
– Responsibly lightweight