Compatibility with Cannondale BB30A asymetric Bottom brackets or standard BB30 housings. BB30 is 42mm Aperture, but instead of pushing the BB30 bearings directly into the frame, bearings fitted into the aluminium housing are pressed into the frame to illiminate creaking to ensure the perfiect alignment and prevent bearing distortion.

Compatible with Hollowgram 30mm axles, FSA, BB30 , SRAMBB30 on a Synapse/CAAD frame and any BB30 Standard which is normally 42mm Aperture. The Housing Presses in flush to the frame and comes with the 5mm Hollowgram spacer.

For a video of installation on a Synapse CLICK HERE

The latest standard introduced by Cannondale. BB30A is used for its Synapse /CAAD frames with Hollowgram cranks in a non standard bottom bracket shell of 73 mm versus commonly 68 mm for road frames.
The "A" stands for Asymmetric. PF30A adds 5mm to the non-drive side of the BB shell.