Driven is the result of a dream of inventing and developing a 99% efficient drivetrain. CeramicSpeed’s DrivEn concept is a truly novel take on what a bicycle drivetrain can be. At the time, the system's Colorado-based inventors proclaimed that DrivEn was the world's most efficient bicycle drivetrain – when it came to converting pedaling energy into wheel motion, that is. When launching the first version of Driven at the Eurobike show in 2018, we had accomplished that goal. CeramicSpeed’s mad chainless Driven drivetrain now changes gear, and it’s for mountain bikes too Still a concept, but more promising than ever Share on Facebook The company claims that the system is much more efficient than anything else out there, too. But the 2018 version of Driven could not be ridden and it could not shift.

CeramicSpeed’s Driven concept drivetrain grabs attention with its radical looks, and the even more radical claim of better-than-99-percent efficiency.