Praxis Works Conversion bottom bracket for BB30 / PF30 for Shimano Road
The Praxis Works Conversion Bottom Bracket for BB30 / PF30 for Shimano Road cranksets is a great solution to creaky bottom brackets and for frames that have seen too much wear and tear from removing bottom bracket parts. This Praxis Works patent pending design works with Shimano™ Hollowtech II steel spindle cranks (just about everything they make including Sora, Tiagra, 105, Ultegra and Dura Ace) in either BB30 or PF30 mountain frames.
The beauty of this bottom bracket is how the bearings don't just sit in the bottom bracket, they thread together. This is great for making up for slight changes in tolerances of different types and makes of frames. If you're tired of servicing your bottom bracket and throwing away three month old parts, this is the perfect solution.