BMW E9X 335i Sparta Brakes - Sparta Brakes GP1 OE Replacement Rotors (wing-slot)
Sparta Evolution high carbon OE replacement one piece brake rotors are desinged to optimize the cooling capacity and high heat performance of the original brake system on any vehicle.
Sparta Evolutions' GP1 rotors are engineered to endure extreme conditions and undergo stringent quality inspection procedures. Laboratory and on-track testing have proven that our rotor alloys last longer and provide more stable friction profiles. All Sparta Evolution GP1 rotors are manufactured utilizing our GX 3.0 alloy to increase wear resistance and heat cycling capabilities. With these features paired with our patented thermal window (TW3) slot pattern, Sparta rotors are proven to last.