Performance M
Maxton Design Rear Diffuser Valance for BMW 5 Series (5er) G30 G31 M Sport/M Pack 2017-2020 - Rear Bumper Lip Spoiler/Skirt/Apron Insert - Undertray Lower Diffuser Panel for Saloon & Touring (Sedan/Estate) - OEM+ Rear Splitter Upgrade
Maxton Design Rear Diffuser Valance for BMW 5 Series (5er) G30 G31 M Sport/M Pack 2017-2020 - Rear Bumper Lip Spoiler/Skirt/Apron Insert - Undertray Lower Diffuser Panel for Saloon & Touring (Sedan/Estate) - OEM+ Rear Splitter Upgrade
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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Maxton Design Rear Lower Valance Upgrade for BMW 5 Series G30 G31 M Sport 2017-2020
Give the back end of your BMW 5er a sharper, more purposeful look with this rear lower apron from Maxton Design. Engineered for the G30 saloon and G31 touring equipped with the M Sport rear bumper, this styling piece adds a clean OEM plus finish that looks factory fresh while delivering that motorsport inspired vibe owners want. Ideal if you are searching for a rear under spoiler, lower bumper insert, rear skirt, rear undertray or performance rear lip for your 5 Series.
Why it stands out
- Vehicle specific design for BMW 5 Series G30 G31 M Sport 2017, 2018, 2019, 2020
- High quality ABS construction for everyday road use with the right balance of strength and flexibility
- Supplied in black and ready to install out of the box, can be painted to match if desired
- Enhances the lower bumper line with a tidy aero diffuser style appearance
- OEM like fit and finish that integrates perfectly with M Sport bodywork
Compatibility
Fits only BMW 5 Series G30 saloon and G31 touring with the M Sport rear bumper, model years 2017 to 2020. Not suitable for non M Sport bumpers.
What is included
- Rear lower valance
- Fitting hardware
- Installation guide
Proven on our cars and with our customers
We have installed this rear lower panel on our own builds and for many customer vehicles. Feedback has been consistently positive on alignment, finish and the smart, subtle transformation it brings to the rear of the G30 and G31. It is a go to upgrade for drivers wanting premium styling without looking overdone.
Finish and installation
- Delivered in black and ready to mount
- No extra prep required unless you are colour coding
- Professional installation recommended for the best result
Fitting manual: Rear Centre Splitters Installation Manual
Fitting service
Prefer us to handle the install. Book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.
Material and packaging
- ABS plastic chosen for its durability and flexibility for daily driving
- Supplied with a protective film to prevent marks in transit, remove before fitting
Good to know
- Please ensure your car is a BMW 5 Series G30 or G31 with the M Sport rear bumper before ordering
- Follow the supplied instructions or use our professional fitting service
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