Chris King BSA ThreadFit 30mm Bottom Bracket

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

Chris King's ThreadFit™ 30 bottom bracket is silky smooth and long-lasting thanks to their legendary, angular-contact bearings, both steel and ceramic, the best in the industry. They actually get faster over time as their contact surfaces wear, because we build them to ultra-tight aerospace tolerances, using machined, Delrin-spindle sleeves to create a perfect, and precise fit between cranks and frame. That’s where the low drag  and butter smooth feel come from. 

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.

Chris King's Threadfit™ 30 bottom brackets come in an array of beautifully anodized colors and each one includes a Fit Kit that allows it to be used with a wide selection of road and mountain bike cranks.

The Fit Kit for our ThreadFit™ 30 with 30mm spindle cranks is available here. The Fit Kit for DUB cranks is available here.

• Engineered, manufactured and assembled in Portland, Oregon USA
• King Lifetime Warranty
• Legendary made-in-house bearings
• Available in 8 beautifully anodized colors
• A Fit Kit is required for use and included in the purchase price
• Ceramic bearing upgrade available
• Uses Chris King bottom bracket cup tool for installation 

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