Shimano RT-CL800 Center Lock Disc Brake Rotor - 160mm

Quiet, Consistent Ice Tech Freeza Braking at 160mm

The RT-CL800 is Shimano's Ultegra/GRX-tier Center Lock rotor with Ice Technologies Freeza construction: stainless braking surfaces sandwich an aluminum core that extends into radiator fins to shed heat on long descents. The updated arm shape stiffens the rotor and cuts the vibration that turns into brake squeal when you're dragging speed downhill.

At 160mm it's the size most road and gravel bikes run up front, and it's also a common rear size on mountain bikes that don't need a 180 or 203. Thickness is 1.5mm, the internal-serration lockring is included, and it works with both resin and metallic pads. Pair it with road, gravel or MTB Shimano hydraulic calipers as your setup requires.

Whether you're replacing a warped or worn rotor, matching a new Ultegra or GRX brake job, or running CL800 rotors with XT calipers, the 160mm RT-CL800 is the everyday Center Lock size that covers the most bikes.

Shimano was founded in 1921 by Shozaburo Shimano in Sakai, Japan, and the company is still based there today. More than a century later, it's one of the biggest names in cycling components. Ice Technologies Freeza is Shimano's heat-management rotor design used across Ultegra, GRX and compatible road and gravel brake systems.