MHC+ BMW F80 M3 & F82/F83 M4 GTX Rear Diffuser In Pre Preg Carbon Fibre

The MHC+ GTX Rear Diffuser for the BMW F80 M3 and F82/F83 M4 has been developed as a complete two-piece carbon fibre rear aero solution, integrating tightly with the factory bumper while adding the depth, structure and motorsport-derived purpose that define the GTX system. Engineered from 100% pre-preg ('dry') carbon fibre, every component is laid up under heat and pressure for optimum resin-to-carbon saturation, delivering exceptional strength, low weight, and a flawless visual finish. The Upper Diffuser section forms the primary visual element — a cleanly resolved insert that follows the factory bumper geometry and adds depth, fin detail, and a confident centre exit treatment. For owners seeking the complete rear aero statement, the optional Lower Undertray attaches beneath the Upper to extend the diffuser line forward, completing the assembly beneath the car and creating a more substantial, technically purposeful rear that visually balances the GTX front splitter. Designed in CAD from a full 3D scan of the F8X chassis and validated with full-scale 3D-printed prototypes prior to tooling, the diffuser delivers OEM-grade fitment and panel alignment. Supplied with all required mounting hardware and pre-applied adhesive tape where necessary, and backed by MHC LDN's fitment guarantee and comprehensive 3-year warranty. Select your configuration (Upper only, or Upper with Lower Undertray) using the options above. PRODUCT SPECIFICATIONS 100% pre-preg ('dry') carbon fibre construction OEM-style 2x2 twill carbon weave Deep high-gloss UV-stable lacquer finish Engineered in-house from full 3D scans and CAD Validated with full-scale 3D-printed test fitments Fitment guarantee Supplied with all necessary mounting hardware Pre-applied automotive-grade adhesive tape where required 3-year MHC LDN warranty COMPATIBILITY BMW F80 M3 BMW F80 M3 Competition BMW F82 M4 BMW F82 M4 Competition BMW F83 M4 BMW F83 M4 Competition