Performance M
Maxton Design Street Pro Rear Diffuser, Valance & Bumper Lip for BMW 4 Series G22 Coupe M Sport (M-Pack) 2020+ - Black Rear Splitter/Aero Insert Performance Upgrade - Fits 420i 430i M440i
Maxton Design Street Pro Rear Diffuser, Valance & Bumper Lip for BMW 4 Series G22 Coupe M Sport (M-Pack) 2020+ - Black Rear Splitter/Aero Insert Performance Upgrade - Fits 420i 430i M440i
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.
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Street Pro rear aero valance by Maxton Design for BMW G22 4 Series Coupe (M Sport package) 2020 onwards
Give the back end of your G22 a sharper, motorsport look with this Maxton Design Street Pro rear aero insert. Crafted specifically for the BMW 4 Series Coupe with the M Sport package from 2020 onwards, this rear bumper add-on delivers a purposeful, track-inspired finish with everyday durability. If you are searching for a BMW G22 rear valance, back bumper diffuser, rear bumper lip, rear splitter for 4 Series, performance body kit upgrade or aggressive rear styling for your coupe, this premium Maxton piece is the go-to choice.
Vehicle application
- BMW 4 Series G22 Coupe with M Sport package, 2020 onwards
In the box
- Maxton Design Street Pro rear valance
- Fitting hardware
Why enthusiasts choose it
- 10 mm ABS construction for a sturdy, high quality feel
- Excellent impact and scratch resistance for daily road use
- UV-stabilised surface helps resist fading
- Weather and temperature resistant for all-season use
- Supplied vacuum sealed with protective film
- No painting required straight out of the box
- Material certified with TÜV MATERIALGUTACHTEN
- Genuine Maxton authenticity labelling
Finish options
- 10 mm matte black
- 10 mm matte black with red core accent
Both finishes arrive ready to install. If you plan to paint, apply a suitable primer first.
Standout styling and fitment
This Street Pro rear diffuser-style insert follows the lines of the factory M Sport bumper, adding bold fins and a race-bred aesthetic without compromising practicality. The result is a cohesive, premium look that elevates the rear profile of the G22 coupé. We have fitted and supplied Maxton Design components to numerous customer cars and feedback on fit, finish and durability has been consistently excellent.
Installation
Professional fitting recommended. For UK installation, MJ Modifications in Warwickshire can carry out fitting. Request a quote at info@mjmodifications.co.uk.
Notes
- Designed specifically for the BMW 4 Series G22 Coupe with M Sport rear bumper, 2020 onwards
- This listing includes the rear aero valance and mounting kit as detailed
Upgrade your BMW G22’s rear bumper with the Maxton Design Street Pro rear valance today. Perfect for drivers searching for a sleek rear undertray look, rear bumper diffuser upgrade, performance styling for the 4 Series coupe and a premium body kit enhancement from a brand enthusiasts trust.
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