BB30A83 Custom Bottom Bracket Designed and Manufactured – Cannondale Topstone

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Cannondale BB30A83 Shimano Bottom Bracket

A Hambini viewer recently enquired about a bottom bracket for his Cannondale TopStone Gravel bike. This bike uses a BB30A83 bottom bracket. A design which is highly unusual, extremely rare and unique to Cannondale. From the frame centerline, the driveside and non drive side apertures have an asymmetrical offset – hence the “A” in BB30A83. […]