MHC+ BMW G80 & G81 M3 Carbon Fibre OEM Style Rear Diffuser & Rear Corner Kit

Refine the rear styling of your BMW with the MHC+ Carbon Fibre OEM Style Rear Diffuser & Rear Corner Kit for G80 & G81 M3, a premium upgrade designed to deliver a clean, factory-inspired finish with enhanced visual impact. Manufactured from 100% pre-preg carbon fibre, this complete kit combines precise fitment, consistent weave quality and long-term durability, making it the ideal choice for owners seeking a high-end carbon upgrade that integrates seamlessly with the original rear bumper.

Key Features:

• Designed for BMW G80 M3 & G81 M3 Touring
• Complete rear diffuser and rear corner kit
• OEM-style design for seamless factory integration
• 100% pre-preg carbon fibre construction
• High-gloss finish with consistent OEM-style weave
• Supplied ready-to-fit with all hardware included
• Precision-engineered for perfect fitment
• Backed by MHC’s 3-year warranty

Complete Rear Styling Upgrade

This kit includes:

• MHC+ OEM Style Carbon Fibre Rear Diffuser
• MHC+ OEM Style Carbon Fibre Rear Side (Corner) Diffusers

Together, these components create a cohesive and refined rear-end finish, enhancing the overall presence of your G80 or G81 M3.

Premium Pre-Preg Carbon Fibre Construction

Manufactured using advanced pre-preg carbon fibre, this kit offers significant advantages over standard carbon fibre:

• Increased strength and durability
• Lighter weight construction
• Consistent weave pattern across all components
• Smooth, high-gloss finish with minimal imperfections

The pre-preg process eliminates air pockets and inconsistencies, resulting in a superior-quality product built to last.

OEM-Style Fitment & Finish

Designed to mirror the factory styling, this diffuser and corner kit ensures:

• Seamless integration with the original bumper
• Clean, OEM-inspired appearance
• Precise alignment and easy installation

No compromises on fitment—just a refined upgrade that looks as though it belongs.

Built to Last

With high-quality materials and a 3-year warranty, this kit is engineered for long-term performance and durability, maintaining its finish and structural integrity over time.

Compatibility

• BMW G80 M3
• BMW G81 M3 Touring

What’s Included

• Carbon fibre rear diffuser
• Carbon fibre rear corner diffusers (left & right)
• Full fitting hardware

Why Choose MHC+?

MHC+ is known for delivering high-quality carbon fibre upgrades, combining precise fitment, premium materials and long-term durability for BMW enthusiasts.

Why Buy from R44 Performance?

R44 Performance supplies premium BMW styling upgrades trusted worldwide.

• BMW specialists
• High-quality carbon fibre products
• Fast UK & global shipping
• Expert support

Upgrade your BMW’s rear styling with the MHC+ Carbon Fibre Rear Diffuser & Rear Corner Kit, delivering a premium finish, precise fitment and long-lasting quality.

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.