CeramicSpeed DrivEn – look no derailleur or chain!

CeramicSpeed has introduced a drivetrain concept – DrivEn – that eliminates the need for both front and rear derailleurs as well as the chain. It’s an interesting development from a company that sells chains and pulley wheels!

Видео CeramicSpeed DrivEn – look no derailleur or chain! канала endurancebiz