The Driven drivetrain features a dual-pinion design. Comprising of a fixed front pinion and shiftable rear split-pinion. The two pinions utilise a total of 21 CeramicSpeed ball bearings that create the engagement interface of the drivetrain. This is a patented engineering novelty that makes the Driven drivetrain revolutionary.
The Driven drivetrain is controlled by wireless electronic shifting. The hollow carbon fibre shaft houses a rechargeable battery, an actuator and the shift mechanism that controls the shiftable rear split-pinion.
The shiftable rear split-pinion utilises a "step and follow" shift pattern. One half of the pinion is engineered as the lead, always stepping into position when free from the cassette to engage into the next gear. The trailing half follows when free from the casette. Completing the shift.
Seamless shift alignment is possible through a Torque Decoupler located on the trailing half of the split-pinion. This is made up of two spring loaded bearings that have been purposely engineered to deliver precise meshing between the pinion and the cassette.