Performance M
Maxton Design Street Pro Side Skirt Extensions Diffusers for BMW 4 Series G22 M Sport (M Pack) 2020+ - Matte Black 10mm ABS - Pair
Maxton Design Street Pro Side Skirt Extensions Diffusers for BMW 4 Series G22 M Sport (M Pack) 2020+ - Matte Black 10mm ABS - Pair
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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Genuine Maxton Design Street Pro side blades for BMW 4 Series G22 Coupe with M Sport package 2020 onwards
Give your G22 a sharper, lower look with these premium rocker panel extensions from Maxton Design. Crafted from robust 10mm ABS in satin black, this left and right set adds purposeful road presence, cleaner side visuals and an OEM plus finish that suits the 4 Series coupe perfectly. If you are searching for BMW G22 sill extensions, rocker covers, aero side splitters or ground effects for an M Sport model, this is the upgrade enthusiasts choose.
Compatibility
- BMW 4 Series G22 Coupe with M Sport package
- Model years: 2020 onward
Why this upgrade stands out
- 10mm thick ABS for serious rigidity and daily-use durability
- Scratch and impact resistant with a UV-stable surface that keeps its colour
- Weatherproof construction for year-round UK driving
- Aggressive Street Pro profile for a factory-plus aesthetic
- Supplied vacuum sealed with protective film to arrive in top condition
- No paint required out of the box
- Genuine product with Maxton authenticity label
- ABS material carries TÜV Materialgutachten
Finish options
- Matte black 10mm
- Matte black 10mm with red core accent
What is included
- Pair of Maxton Design Street Pro side extensions for the G22
- Fitting hardware
Painting
Painting is not necessary. If you decide to paint, use primer first for best adhesion.
Installation and support
Professional fitting recommended for perfect alignment and fastening. Our team at MJ Modifications in Warwickshire has installed these multiple times and customers love the fit and finish. For a fitting quote or booking, email info@mjmodifications.co.uk.
Why buy from us
We use these on customer cars and on our own builds. Feedback is consistently positive for the tight fit, clean styling and quality feel. If you want BMW 4 Series coupe side splitters, G22 side lips or sill blades that look like they belong on the car, this set delivers.
Popular search terms
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