Why We Make It

We build bearings, so we build bottom brackets. T47 is a standard we helped develop, an answer to the imprecise and often loud press fit bottom brackets that appeared on the market a few years ago. T47 offers the benefits of larger bottom bracket shells, mainly frame stiffness, with the upsides of traditional, threaded bottom brackets, precision and quietness. 

Why You Want It

ThreadFit™ T47 30i will fit 68mm, 73mm, 83mm, 86mm, and 92mm shell widths with 30mm spindles.

All our bottom brackets come with King’s legendary, angular-contact bearings, either steel or ceramic. These are the best bearings in the industry, and actually get faster over time, as their contact surfaces wear.

You want this bottom bracket because it offers super low drag. You want this bottom bracket, because it can be opened, cleaned and repacked for years of faithful service. You want this bottom bracket, because you don’t want to think an awful lot about your bottom bracket.

A Fit Kit is required for use

Your Fit Kit extends the useful life of both your bottom bracket and your cranks, it reduces the potential for noise, and it also allows you to use one bottom bracket with a wide array of cranks, if that’s your jam.

Fit Kit #3 (PBB083) for ThreadFit™ 30 with 30mm spindle cranksets.

• For use with ThreadFit™ 30
• 68mm, 73mm BB shells.
• Common Cranks: White Industries, SRAM, Race Face

Fit Kit #5 (PBB085) for ThreadFit™ T47 30x and T47 30i with 30mm spindle cranksets.

• For use with ThreadFit™ T47 30x and T47 30i
  
• 68mm, 73mm BB shells.
  
• Common Cranks: White Industries, SRAM, Race Face