Performance M
Maxton Design Gloss/Piano Black Rear Side Splitters, Rear Spats & Corner Extensions for BMW M4 G82 2021-on (M4 Competition Coupe) - Fits OEM M Carbon Package - Rear Bumper Winglets - Pair with Fitting Kit
Maxton Design Gloss/Piano Black Rear Side Splitters, Rear Spats & Corner Extensions for BMW M4 G82 2021-on (M4 Competition Coupe) - Fits OEM M Carbon Package - Rear Bumper Winglets - Pair with Fitting Kit
Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.
Couldn't load pickup availability
Maxton Design high gloss rear corner extensions for BMW G82 M4 2021+
Give the back end of your G82 M4 a sharper, lower and more purposeful look with Maxton Design rear corner extensions in a deep high gloss black finish. Tailor made for the 2021 onwards BMW M4 coupe that comes with the factory M Carbon exterior package, these add-on rear bumper winglets deliver that clean, motorsport-inspired aesthetic without looking overdone. We have fitted these in-house on customer cars and the feedback on fit and overall appearance has been outstanding.
Highlights
- Vehicle-specific moulding for the BMW G82 M4 for a precise contour and neat alignment
- High gloss piano black surface for a premium, factory-plus appearance straight out of the box
- Strong yet flexible ABS construction designed to handle daily road use
- Visual drop to the rear bumper edges for a wider stance and sharper rear profile
- Supplied as a matched pair with fixings for a straightforward install
- Complements other Maxton Design add-on aero for the G82 M4 such as front lips and side skirt extensions
Compatibility
- BMW M4 G82 coupe 2021 onwards, including M4 Competition G82
- Compatible only with vehicles equipped with the OEM M Carbon exterior package
What is included
- Left and right rear corner extensions
- Fitting kit and installation instructions
Fitting manual: Download the Maxton Design rear corner extensions guide
Material and finish
Manufactured from ABS for durability and resilience, supplied in a mirror-gloss black finish that pairs perfectly with the M Carbon package details and other black exterior trims.
Professional fitting
We recommend professional installation for the best alignment and finish. MJ Modifications offers expert fitting at our Warwickshire workshop. To request a quote, email info@mjmodifications.co.uk.
Packaging and care
Each piece arrives with a protective film to prevent marks in transit. Remove the film after installation to reveal a smooth, scratch-free surface.
Proven on customer cars
Installed by us on multiple G82 builds, these Maxton Design rear corner extensions consistently deliver a quality fit and an immediate styling lift. A simple bolt-on that makes a big difference to your M4’s rear end.
Search-friendly terms
G82 M4 rear corner extensions, BMW M4 G82 rear bumper winglets, M4 Competition rear apron extensions, piano black rear spats for BMW G82, BMW M4 2021+ rear corner trims, G82 M4 exterior styling parts, BMW M4 rear lower bumper add-ons, Maxton Design rear winglets M4 G82, M4 G82 body styling gloss black, BMW M4 coupe rear valance extensions, bolt-on rear corner fins G82, BMW M4 2021+ exterior upgrade gloss black.
Share
