This article is a short review of the CEMA Bearing Full Ceramic pulley wheels. I will try to compare these against stock Dura Ace 9000 pulley wheels, but I don’t have a friction facts laboratory setup at home. So it will be an in-depth look and feature comparison.
In this article I will review the Dynamic Drivetrain detailing brush, a small but strong brush to keep your rear derailleur pulley wheels clean developed by a Dutch company Dynamic Bike Care.
When you first pick-up the brush you think it is an old-school (non-electrical) tooth brush on steroids. However it is much more and well designed.