Huge 17-tooth pulleys said to run more efficiently than stock – but at a hefty price Danish bearing friction specialist CeramicSpeed is moving slightly outside of its comfort zone for its latest ...

Let’s face it, the cycling industry loves trying to eke out marginal drivetrain efficiency gains with oversized pulley upgrades and ceramic bearings, but these things are incredibly expensive. So, ...

Lightweight, beautifully designed pulley wheel cage system to rival, if not usurp, CeramicSpeed's dominance at the top of the tree You can trust Cyclingnews Our experts spend countless hours testing ...