Performance M
Maxton Design Gloss Piano Black Rear Diffuser/Valance for BMW 1 Series F20 F21 LCI Facelift (2015-2019) M Sport/M Package Hatchback - Rear Bumper Lower Diffuser, Apron Insert Trim, Rear Lip, OEM+ Styling
Maxton Design Gloss Piano Black Rear Diffuser/Valance for BMW 1 Series F20 F21 LCI Facelift (2015-2019) M Sport/M Package Hatchback - Rear Bumper Lower Diffuser, Apron Insert Trim, Rear Lip, OEM+ Styling
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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Transform the rear of your BMW 1 Series with a premium gloss black lower diffuser that delivers an OEM-plus look with real presence. This rear bumper insert from Maxton Design adds a sharp, performance-inspired finish to the F20 and F21 LCI hatchback while maintaining clean factory lines. If you want a sleek, high-gloss rear valance that complements the M package styling and elevates your road presence, this is the upgrade.
Compatible vehicles
Designed exclusively for the BMW 1 Series F20 and F21 facelift models with the factory M package rear bumper, model years 2015, 2016, 2017, 2018 and 2019. Three-door and five-door LCI hatchback only. Please compare your bumper style with the listing images before ordering.
Why choose this rear diffuser
- High-shine gloss black finish for a premium, sporty appearance
- OEM-like fitment for the F20 and F21 LCI M package bumper
- Aggressive look with clean lines to enhance the rear profile
- Manufactured from durable ABS, widely used in automotive exterior components
- Lightweight with a degree of flexibility to aid fit
- TUV MATERIALGUTACHTEN certified material
What you receive
- 1 x rear diffuser panel in gloss black
Installation details
- The original lower panel must be removed before installing this replacement rear diffuser
- Self-tapping screws are required to secure the new panel in position
- Fitting guidance is available in the manufacturer’s manual: View the installation manual
- Professional installation is recommended for best alignment and finish
Need fitting support or a fully installed package in the UK? Book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote.
Finish and quality
- Supplied ready to fit in gloss piano black
- Arrives with a protective film to help prevent marks in transit
- No painting required
Real-world feedback
We have installed this aero diffuser on customer cars and the response has been excellent. The gloss black lower valance dramatically tidies the back end, sharpens the styling and pairs perfectly with M package bodywork for an authentic performance look.
Important information
- Remove the protective film only once you are satisfied with test fit and alignment. Removing the film will void returns
- The holographic authenticity label identifies a genuine Maxton Design product. Removing this label will void returns
- We cannot be held responsible for incorrect installation or misuse
- Please confirm compatibility with your vehicle by checking the photos and model details above
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