Maxton Design Gloss Black Rear Side Splitters, Rear Spats & Corner Splitters (Rear Bumper Skirts/Winglets/Valance Extensions) for BMW Z4 G29 M Sport/M-Pack 2018+

High Gloss Black Rear Corner Extensions for BMW Z4 G29 M‑Sport 2018 onwards

Give your G29 roadster a sharper, motorsport-inspired rear profile with these high gloss black rear corner extensions. Crafted by Maxton from automotive-grade ABS, these rear bumper add-ons tighten up the stance, visually widen the car and tie in perfectly with factory M‑Sport lines for a clean, performance look.

Ideal for enthusiasts searching for BMW Z4 G29 rear corner splitters, rear bumper skirts, rear valance extensions, aero fins, rear winglets or corner spats, this bolt-on styling upgrade complements other gloss black accents and works brilliantly as part of an aero kit or on its own.

Compatibility

Fits only: BMW Z4 G29 with M‑Sport/M‑Pack styling, 2018 onwards. Not suitable for non M‑Pack bumpers.

What’s included

• Left and right rear corner extensions
• Fitting hardware and instructions
• Online guide: View the Maxton fitting manual

Why enthusiasts choose this upgrade

• Deep gloss black finish pairs with existing BMW shadowline and Maxton styling parts
• Transforms the back end with a wider, lower and more aggressive appearance
• Precision-contoured for the G29 M‑Sport rear bumper for a neat, OE‑style fit
• Durable ABS construction resists everyday road use and minor knocks
• Perfect finishing touch to a Z4 bodykit or a simple stand-alone enhancement

Material and finish

Manufactured from impact-resistant ABS plastic for exterior use. Supplied with a transport film to protect the surface in transit. Remove the film after installation to reveal the pristine high gloss black finish.

Installation

Professional fitting is recommended for best alignment and secure mounting. Book expert installation with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Tried and approved

We have installed these in-house and customer feedback on fitment and finish has been excellent. A simple change that makes a big visual impact on the G29.

Notes

• Protective transport film must be removed after fitting
• Designed only for vehicles with the factory M‑Sport/M‑Pack rear bumper

Search-friendly overview

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