Chris King ThreadFit T47 Bottom Bracket

The T47 standard combines the best of both worlds: it uses a threaded interface to eliminate the creaking often associated with press-fit systems, while the 47mm shell diameter allows for the larger spindle diameters and increased stiffness typically found in press-fit designs.

This specific model is designed for frames with a T47 shell interface and is compatible with 68mm or 73mm shell widths. It is specifically engineered to work with SRAM/Truvativ GXP spindle standards, so please verify your crankset spindle type before purchasing.

Chris King bearings are designed for longevity, but the frequency of service depends on your riding conditions. Because this unit is fully serviceable with a grease injection tool, you can easily flush out contaminants and re-grease the bearings whenever you notice increased friction or after riding in particularly wet or muddy environments.

Yes, you will need a specific T47 bottom bracket tool that matches the Chris King cup interface. Using the correct tool is essential to ensure proper torque and to avoid damaging the cups during installation.

Chris King manufactures their own bearings in-house, which allows for extremely tight tolerances and a unique design that can be serviced rather than replaced. This results in a smoother, more durable interface that generally outlasts standard cartridge bearings found in many other bottom brackets.