4WD; 6 Lug. G3000 cast iron Rotor. Reduce vibration and noise, providing you with a smooth braking experience. 2x HUSCH Front Disc Brake Rotors - JL54109. HUSCH BRAKE. Brake Specifications ▶ HIGH PERFORMANCE: HUSCH brake rotors are made of G3000 cast iron, which dissipates heat evenly and enhances braking performance.