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Maxton Design Street Pro Rear Diffuser for BMW M4 F82 Coupe (2014-2020) - Matte/Matt Black 10mm ABS Rear Valance / Bumper Insert / Rear Splitter / Lip Diffuser / Undertray / Bumper Extension

Maxton Design Street Pro Rear Diffuser for BMW M4 F82 Coupe (2014-2020) - Matte/Matt Black 10mm ABS Rear Valance / Bumper Insert / Rear Splitter / Lip Diffuser / Undertray / Bumper Extension

£149.00
£149.00
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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.

Street Pro Rear Lower Valance in Matte Black - Maxton Design - BMW M4 F82 Coupe 2014 to 2020

Give the back end of your M4 a serious upgrade with the Maxton Design Street Pro rear lower diffuser insert. Cut from robust 10 millimetre ABS and finished in matte black, this rear bumper extension brings a track-inspired look with everyday durability. Clean lines, precise edges and a purposeful profile elevate the F82’s stance while keeping that OEM-plus feel enthusiasts want.

This listing is for the 10 mm matte black version. Also available in 10 mm matte black with red core accents for an extra motorsport vibe.

Why enthusiasts choose it

  • Solid 10 mm ABS construction for rigidity and long-term strength
  • UV-protected surface to help resist fading and discolouration
  • Excellent scratch and impact resistance for daily-driving conditions
  • Weather and temperature resistant - built for UK roads
  • Arrives vacuum sealed with protective film - ready to install
  • No painting required - if painting, apply primer first
  • Genuine Maxton Design item with authenticity labelling
  • TUV MATERIALGUTACHTEN certification for material quality

Compatibility

Fits BMW M4 F82 Coupe 2014, 2015, 2016, 2017, 2018, 2019, 2020. Not suitable for F83 Convertible or F80/F82 models with non-standard rear bumpers.

What’s in the box

  • Maxton Design Street Pro rear lower diffuser insert for F82
  • Mounting hardware kit

Real-world feedback

We run Maxton Design Street Pro aero on our own builds and our customers’ cars. Fitment, finish and alignment are consistently excellent, giving that clean factory-plus look with a more aggressive rear end. The thicker 10 mm profile adds depth and presence without looking overdone.

Professional fitting

Supplied with fixings. Professional installation recommended. For fitting by MJ Modifications in Warwickshire, request a quote: info@mjmodifications.co.uk.

Common search terms

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