Carbon Fiber Rear Diffuser - 2004-2007 Subaru Impreza WRX/STI (APR Wide Body Only)
Ships in 3–7 business days · $95 flat-rate shipping per order, tracked, anywhere in the US
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Diffusers work in conjunction with other aerodynamic components of a car to help produce downforce. Because a car displaces air as it moves forward, the air molecules in the rear of the car get disrupted causing a vacuum of low pressure air.
To help channel the high speed air flow coming from underneath the car, diffusers redirects the high speed air flow to transition smoothly transition into the low pressure vacuum in the rear. This encourages a smoother flowing air flow underneath the car and allows better performance from other aerodynamic components such as aerodynamic wings.
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Carbon Fiber Construction
This component is formed in the autoclave at high temperatures using pre-pregnated carbon fiber manufacturing processes, for high strength and low weight. - UV Resistant Coating
| Vehicle | Subaru Impreza WRX / STI (GD) |
|---|---|
| Model years | 2004–2007 |
| Trims | WRX, STI |
| Notes | Requires the APR wide-body kit. |
| Material | Carbon fiber |
|---|---|
| Carbon type | Dry carbon (pre-preg) |
| UV protection | UV-resistant finish |
| Part type | Rear Diffuser |
| SKU | AB-820620 |
| Condition | New |
Shipping
- Processing time varies by part — current availability is shown above the Add to cart button.
- $95 flat-rate shipping per order to any US address — one charge even if you add more parts that ship the same way.
- Tracking is emailed when your order ships. Route package protection is available at checkout.
Returns
- Request a return within 30 days of delivery by emailing hello@royalperformanceusa.com — an approval / RMA is required before sending anything back.
- Items must be unopened, unused and uninstalled, in original packaging. A 20% restocking fee applies and return shipping is paid by the customer.
- Installed, altered, painted, custom, special-order and pre-order items can't be returned.
- Report shipping damage within 72 hours with photos of the box, label and part.
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