Galfer Disc Shark Evo 6-Bolt Rotor More Fins. More Cooling. More Descents. When heat is the enemy on long enduro stages or heavy e-bike use, rotor design matters as much as caliper spec. The Disc Shark Evo is the top-tier version of Galfer's gravity-focused rotor line, adding more internal fins and more thermal dissipation holes than the original Disc Shark to pull heat out of the system faster under sustained braking loads. The one-piece stainless steel body is laser-cut from 420 high carbon steel, never stamped, and double disc-parallel ground for consistent flatness across the full braking surface. A built-in speed sensor magnet hole and confirmed e-bike compatibility make it a direct fit for powered builds without modification. Features Disc Shark Evo internal fins and thermal dissipation holes greater fin count and hole density than the original Disc Shark for faster heat extraction under repeated hard braking One-piece 420 high carbon stainless steel construction laser-cut and double disc-parallel ground for consistent flatness and long-term durability6-bolt mount universal interface fits standard MTB hubs front and rear E-bike compatible with speed sensor magnet hole rated for the higher braking forces and heat loads of motor-assisted riding, no modification needed Finish options: anodized black, raw aluminum, Kashima coated choose the finish that matches your build or budget Specifications Diameter180mm Mount Interface6-Bolt Construction One-piece 420 high carbon stainless steel, laser-cut, double disc-parallel ground Thickness2mm E-Bike Approved Yes | Galfer | Shark Evo 6-Bolt Brake Rotor 180Mm X 2. 0Mm, Black