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RotorBB30-24 Converter Bottom Bracket - Road


Item # RTR0027

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  • Black/Black, One Size ($65.00)
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Item # RTR0027

So, you bought a new road frame, but your existing crankset is a BB24 and the frame is a BB30 — the frustration is stacking. However, your question of why nothing is consistent anymore has been answered by Rotor. Yes, Rotor designed the BB30-BB24 Converter Road Bottom Bracket to make changing components between frames a breeze.

Rotor created a smooth, after-market 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 108 grams, it allows this without stacking up needless weight.

The Rotor BB30-BB24 Converter Road 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.

  • Steel bearings
  • 24mm shell width

Tech Specs
Material[bearings] steel
Shell TypeBB30
Shell Width24 mm
Recommended Userunning BB24 cranks with a BB30 frame

Actual Weight

Black/Black, One Size

Claimed Weight

Claimed weights are provided by the vendor.

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Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

What do you think about this product?



Will this fit a 1x11 sram crankset?


Will this work on new R2 and Ultegra 6800 crankset?

>Rating: 5

No more creaking!!

I've used it several times

Exactlt as described. Was able to move my dura ace ceankset onto the TT bike and don't have that annoying creaking anymore.


Will this fit/work on a 2015 AR5?

Yes, your frame fits BB30, just make sure you need the 24mm reducer.


How does it install? Are the bearings...

How does it install? Are the bearings radial or angular-contact?