Just about every mountain biker uses a drivetrain, save for a few of the elite park riders like Remy Morton. We may not give our drivetrains a lot of consideration when they are working as they should be, and that has changed a lot for anyone who has been riding for more than a decade. Mountain bike drivetrains haven’t had any ground breaking changes, they still rely on a chain running over sprockets, with a derailleur used to change gears. Said derailleur is operated by a shifter – be that mechanically or electronically. There are some changes here with eMTB systems offering automatic shifting with electronic drivetrains – but they’re still moving a chain over a cassette with an external drivetrain. It’s cool, but not a ground up redesign.
Classified Powershift launched a novel concept for road, and then gravel bikes. They use existing derailleurs, chains and shifters, and pair them to their
