Maxton Design V2 Rear Bumper Diffuser Valance/Lip Splitter – Gloss Black (Piano Black) – BMW 1 Series F40 M Sport (M‑Pack) & M135i/M135i xDrive 2019‑on – Twin Exit Lower Bumper Insert/Rear Apron – ABS OEM+

Rear lower diffuser insert in piano black for BMW 1 Series F40 M Sport package and BMW M135i (2019 onwards)

Give your F40 hatch a sharper, motorsport-inspired rear end with this Version 2 rear lower valance from Maxton Design. Finished in deep piano black, this rear apron adds an OEM plus aesthetic with a clean, purposeful profile that complements the factory bumper lines on both the M Sport package and the M135i. Manufactured from automotive-grade ABS, it offers the ideal balance of strength, light weight and flexibility for everyday road use while delivering that premium gloss look enthusiasts want.

Compatibility

• BMW 1 Series F40 M Sport package (2019 onwards)
• BMW 1 Series F40 M135i / M135i xDrive (2019 onwards)

Important: Fits the M-Pack version and the M version. The M-Pack version requires two-sided exhaust and double ends, and for the M version you need to change to two double-ends. Please ensure your tailpipe configuration matches these requirements before ordering.

What is included

• Maxton Design Version 2 rear lower valance in high-gloss black

Why this upgrade

• Transforms the back end with a more aggressive, performance-inspired stance
• High-gloss piano black finish for a premium, factory-plus appearance
• ABS construction used widely in the automotive industry for durability and impact resistance
• TUV MATERIALGUTACHTEN certified material
• Designed as a direct swap for the original lower diffuser section

Fitting information

• Original lower panel must be removed
• Self-tapping screws are required to secure the new panel
• Fitting manual: Download here

Professional installation is recommended. For expert fitting, contact MJ Modifications in Warwickshire for a quote at info@mjmodifications.co.uk.

Trusted by enthusiasts

We run Maxton Design parts on our own builds and regularly install them for customers. Feedback on fit, finish and the overall upgrade to the F40 rear profile has been excellent. If you want a clean, OEM plus rear-end refresh that looks right at home on a daily or a show car, this Version 2 rear lower splitter is a proven choice.

Additional information

• No painting or finishing required
• Supplied with a protective film. Only remove once you are certain the item suits your vehicle
• Removal of the protective film voids returns
• Please compare your bumper and exhaust layout to the listing photos before purchase
• We are not responsible for incorrect installation or misuse
• The holographic verification sticker confirms this is a genuine Maxton Design item. Removing this sticker will void returns

Search-friendly terms

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