SHIMANO: A Long History of Innovative Research Shimano MTB components are backed by a long history of innovative research, from aerodynamics to ergonomics and resulting in smooth, precise, shift changes, a drivetrain system with loss-free propulsion, and a braking system with high reliability. Together, they let the rider concentrate on the ride, for stress-free enjoyment. SHIMANO components are designed for people who love cycling, in every part of the world. Fitted with a mount for the Centrelock disc brake rotor system, you’ll save time and effort when changing out rotors during maintenance or for transporting your bike. Precision Bearings Angular contact bearings used in the hub are designed to cradle the balls giving both radial and lateral support for superior strength and durability in real world riding conditions. They also offer precision bearing adjustment and easy maintenance. Better Grip A 24mm inner rim width spreads the tyre out to increase the contact patch and give you significantly better grip.