SwissStop Catalyst Race Disc Rotor - 140mm CenterLock Silver/Black. The SwissStop Catalyst Pro Disc Rotor is the most lightweight rotor option from SwissStop. The two-piece rotor does not sacrifice performance and features a spider design that offers improved aerodynamics.

12% lighter than Catalyst Pro

Two-piece construction

Brake ring dimensions are optimized for race pads

1.8 mm thickness

Aluminum alloy spider provides increased stiffness

New spider design for improved aerodynamics

Centerlock mount

Compatible with all sintered and organic pad compounds

Optimized for SwissStop EXOTherm2 and Disc RS

UCI approved