Drilled links reduce rotating mass
520MX3 chain uses a clip link and is Non O-ring
All other V3 2.0 chains use x-ring seals to reduce friction
Improved tensile strength
Roadracing specific RRX3 now available
Includes rivet type connecting link
Precision-manufactured Sprockets are induction-hardened to very specific tolerances in order to improve concentricity providing a stronger, quieter and longer lasting sprocket. Vortex Sprockets are plated with a special zinc coating to resist corrosion with drilled lightening holes to reduce rotating mass. Vortex utilize the same proven Vortex design with color anodizing that excludes Vortex sweeps, mud grooves and teeth. The result is a flash of color with silver highlights. Utilizes the same proven Vortex design with a color anodize that excludes Vortex sweeps, mud grooves and teeth. 100% CNC-machined. Saber tooth grooves.