StopTech Sport Slotted Brake Rotors are premium replacement rotors designed to improve braking performance and cooling. This specific part (126.45064SL) is a Left Rear rotor featuring a unique slotted design that helps evacuate heat, gas, and brake dust. Components included: 1x StopTech Slotted Sport Brake Rotor (Left Rear) PN: 126.45064SL. High-carbon metallurgy provides increased friction and reduced squeal. Durable E-Coating finish protects against corrosion on non-friction surfaces.