2021-2026 BMW G82 G83 M4 Dry Gloss Double Sided Carbon Fiber Rear Side Diffuser
Ships in 3–7 business days · tracked shipping across the USA
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2021-2026 BMW G82/G83 M4 Dry Gloss Double Sided Carbon Fiber Rear Side Diffusers (Pair)
Elevate the rear profile of your 2021-2026 BMW G82/G83 M4 with the Auto Addict USA Dry Gloss Double Sided Carbon Fiber Rear Side Diffusers. Designed to complement the factory rear bumper, these premium rear side diffusers add an aggressive motorsport-inspired appearance while maintaining OEM-quality fitment and finish.
Manufactured by Auto Addict USA, each diffuser is produced using advanced 3D scanning technology, precision CNC-machined molds, and aerospace-grade pre-preg (dry) carbon fiber. Every component is autoclave cured to ensure maximum strength, lightweight performance, and an exceptional carbon fiber weave that outperforms traditional wet carbon fiber construction.
Featuring a double-sided gloss carbon fiber construction, these rear side diffusers showcase exposed carbon fiber on both the exterior and interior surfaces for a premium appearance from every angle. Designed as a direct replacement for the factory rear side trim, they utilize OEM mounting locations for a precise, factory-style installation.
Finished with a UV-resistant high-gloss clear coat, these diffusers provide long-lasting durability while giving your BMW M4 a more aggressive and refined rear-end appearance.
Features
- Manufactured by Auto Addict USA
- Fits 2021-2026 BMW G82 M4 Coupe
- Fits 2021-2026 BMW G83 M4 Convertible
- Sold as a pair (left and right)
- Direct replacement for the factory rear side diffuser trim
- Premium pre-preg (dry) carbon fiber construction
- Autoclave-cured for superior strength and lightweight performance
- Manufactured using precision CNC-machined molds
- Double-sided gloss carbon fiber finish
- UV-resistant automotive clear coat
- OEM-style mounting locations for precise installation
- Lightweight and durable construction
- Aggressive OEM+ styling with factory-quality fitment
Why Choose Auto Addict USA?
At Auto Addict USA, every carbon fiber component is engineered using advanced 3D scanning, CNC tooling, and aerospace-grade pre-preg carbon fiber manufacturing. Our autoclave curing process creates lighter, stronger, and more consistent carbon fiber parts with exceptional weave quality and OEM-level fitment. Every product is designed to deliver premium craftsmanship, performance, and durability for enthusiasts who demand the best.
| Vehicle | BMW M4 (G82) |
|---|---|
| Model years | 2021–2026 |
Trim, options or aftermarket parts can change fitment. with your year, model and trim (or VIN) and we'll confirm before you order, or text / call (619) 706-9046.
| Material | Carbon fiber |
|---|---|
| Carbon type | Dry carbon (pre-preg), autoclave-cured |
| Finish | Gloss |
| UV protection | UV-resistant finish |
| Construction | Double-sided (carbon on both faces) |
| Part type | Rear Diffuser |
| SKU | AA_G80_HD372_PRO |
| Condition | New |
Shipping
- Processing time varies by part — current availability is shown above the Add to cart button.
- Shipping cost is calculated at checkout by size, weight and destination.
- 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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