ST40/26-26/35

Performance Rotor Rings 309mm x 32mm (12.17" x 1.26") - P.C.D. 177.8mm. Replacement for StopTech C43 CBK brake kits. Features directional ventilation vanes for optimal cooling performance and increased resistance to cracking. Made of CM-250 special formulated high carbon alloy cast iron. Floating 2-piece design minimizes brake fade & judder. Slotted rotor surface improves braking consistency by maintaining a clean contact surface and dissipating heat and gases. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%. Includes one pair (LH & RH) of Paragon Performance Rotor Rings and a detailed installation manual. Best for Mercedes-Benz and AMG drivers who want OEM-like refinement with better heat control. These rotors are a strong choice for Mercedes and AMG applications where the goal is to keep the car composed, quiet, and confidence-inspiring in daily use while still handling the higher speeds and weight these cars generate. They suit owners who want a premium replacement with strong thermal stability and consistent response.