BMW G20 & G21 3 Series M Sport Gloss Black Rear Diffuser

This gloss black rear diffuser for the BMW G20 and G21 3 Series M Sport models is a clean, well-balanced exterior upgrade designed to refine the rear profile while maintaining factory-inspired fitment and styling. Shaped to complement the M Sport rear bumper, it adds subtle definition and visual depth without overpowering the original design.

Manufactured from high-quality ABS plastic, the diffuser offers excellent durability for everyday road use and a consistent gloss black finish that matches other exterior trim elements. Once fitted, it sharpens the rear appearance and gives the car a more purposeful, finished look, while still remaining understated and cohesive.

Designed specifically for G20 and G21 M Sport models, this rear diffuser delivers reliable fitment and strong visual impact at excellent value, making it an ideal upgrade for owners looking to enhance the rear styling of their 3 Series.

Key Features

• Rear diffuser designed for M Sport models

• High-quality ABS plastic construction

• Gloss black finish for a clean, modern appearance

• Enhances rear styling while retaining an OEM-inspired look

• Designed for accurate fitment on the M Sport rear bumper

• Durable and suitable for daily driving

• Excellent value exterior styling upgrade

Compatibility

• BMW G20 3 Series M Sport

• BMW G21 3 Series M Sport

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.