STI Rear Under Diffuser Black Subaru WRX 2022-2026 | SG517VC310 vendor_Mooresport High-pressure optimization (60–90 PSI): Increased

High-pressure optimization (60–90 PSI): Increased flow where forced induction needs it most

Part #: 521-790-8045BK

your order includes two custom-designed drivers

- 6 Puck Iron puck *RIGID* disc

and all other necessary hardware for a direct installation

STI Rear Under Diffuser Black Subaru WRX 2022-2026 | SG517VC310 vendor_Mooresport High-pressure optimization (60–90 PSI): IncreasedFitment Information: 2022 2026 Subaru WRX Features: The STI Rear Under Diffuser has been designed to provide the air under the vehicle with a proper exit channel out of the rear bumper at higher speeds. This will increase the downforce while stabilizing the chassis by creating a vacuum under the vehicle, pulling the chassis closer to the ground. Additionally, this rear under diffuser will add a more aggressive look to the rear bumper of your 22 23