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The factory turbo inlet on the VA WRX is a known restriction — a plastic piece designed around packaging constraints rather than airflow efficiency
Nearly all StopTech 1-piece rotors have unique slot or hole patterns for the left and right sides of the vehicle
Specially recommended for cars using LPG or CNG injection systems and requiring a high performance Mid-SAPS specification lubricant meeting ACEA C3 and/or API SP (or below)
BlueStuff or even OrangeStuff
Power Stop 18-20 Subaru WRX STI Rear Evolution Coated Rotor - 2018-2021 Subaru STI PDM_snow-accessories Join the ranks of satisfiedPower Stop Evolution Coated rotors are a direct bolt on replacement for factory equipment. Fully coated using Genuine GEOMET rust preventative coating; treated with a thin layer of Genuine GEOMET 360 coating to protect against rust and corrosion without influencing the vehicle's braking performance. Manufactured to original equipment specifications for fitment, weight, vane count, and performance. This Part Fits: Year Make Model Submodel 2021 Subaru