We manufacture bearings, so we build bottom brackets. The T47 is a standard we helped develop, a response to the tight-fitting, imprecise and often noisy bottom bracket shells that appeared on the market a few years ago. The T47 offers the advantages of larger bottom bracket shells, primarily frame stiffness, with the advantages of traditional threaded bottom brackets, precision and silence.

ThreadFit™ T47 24i fits 86 mm and 92 mm shell widths with 24 mm spindles.

All our bottom brackets are equipped with the legendary King angular contact bearings, in steel or ceramic. These are the best bearings in the industry and they get faster over time as their contact surfaces wear in.

You want this crankset because it offers very low drag. You want this bottom bracket because it can be opened, cleaned and repacked for years of faithful service. You want this crankset because you don't want to think too much about your crankset.

The fit kit for our ThreadFit™ T47 24i is available here.

King Lifetime Warranty

Legendary in-house manufactured bearings

Ceramic bearing upgrade available

Threaded security with PressFit 30 shell stiffness

Designed, manufactured and assembled in Portland, Oregon, USA

A fit kit is required for use and included in the purchase price

Uses the Chris King bottom bracket cup tool for installation