BMW E9X 335i Sparta Brakes - Sparta Brakes GP1 OE Replacement Rotors (S-slot)
GP1 OE Replacement Rotor (S-Slot)
Sparta Evolution GP1 rotors are direct OEM replacement rotors that come standard with the Sparta Evolution signature S-groove pattern. Designed for longevity and smooth actuation the S-groove pattern features signature "S" shaped slots uniformly sized and evenly distributed across the friction surface. GP1 Rotors are manufactured using high carbon cast iron to increase wear resistance and heat cycling capabilities. The GP1 rotors are high-performance OEM replacements designed to outperform any other OEM replacement rotor on the market.