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Rotor BB30-24 Converter Mountain Bike Bottom Bracket - Stainless


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  • Black/Black, One Size

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BB30-24 Converter Mountain Bike Bottom Bracket

Rotor designed the BB30-BB24 Converter Mountain Bike Bottom Bracket to make changing components between frames a breeze. Now you're able to use the 24mm cranks of your choosing with that BB30 frame.

Rotor created a smooth, aftermarket converter using its labyrinth seals. Labyrinth seals have a series of grooves, or teeth, where the male and female pieces slip together — often perpendicular to the threads. These grooves create a maze that fluid would need to pass through in order to create a leak. Additionally, the labyrinth seals provide unparalleled protection from elements such as dust, water, and mud.

Most importantly, though, this converter allows you to run a conventional BB24 crankset with a BB30 frame. And even better, at around 120 grams, it allows this without stacking up needless weight.

The Rotor BB30-BB24 Converter Mountain Bike Bottom Bracket is compatible with conventional BB24 cranks from Rotor, Shimano, and Shimano-compatible brands. It features steel bearings, and it's available in the color Black.

  • Item #RTR000V

[bearings] steel
Shell Type
Claimed Weight
120 g
Recommended Use
running BB24 cranks with a BB30 frame

Tech Specs

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Will this BB work for mounting an FSA Mega Exo 386 crankset (24mm spindle) in a 73mm wide PF30 BB (Niner Air 9 RDO)?