The Sram-developed PF30 bottom bracket shell standard was originally designed around the modern BB30 crankset standard. Fortunately, the enlarged shell with its narrow bearing stance allows this standard to be adapted to fit older 24 mm crankset spindles. HSC manufactures these PF30 compatible bottom brackets to fit both Shimano's Hollowtech II and Sram's GXP cranksets. These bottom brackets use the the same size 6805 bearings used in the manufacturers' stock bottom brackets, but offer a performance uprade with an ultra high quality hybrid ceramic configuration.
Feel free to contact us directly for technical questions.
We recommend that PF30 bottom brackets be professionally installed. In the absence of a component-specific installation tool, a standard headset press may be used.