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BMW M3 G80 G81 G8X Carbon Fibre/Fiber Rear Bumper Diffuser – CT Design Style Performance Rear Valance Splitter Insert, Pre-Preg High Gloss, 2021+ Saloon & Touring

BMW M3 G80 G81 G8X Carbon Fibre/Fiber Rear Bumper Diffuser – CT Design Style Performance Rear Valance Splitter Insert, Pre-Preg High Gloss, 2021+ Saloon & Touring

Regular price £799.00
Regular price £899.00 Sale price £799.00
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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.

Premium rear aero upgrade for G8X owners

Elevate the rear profile of your G8X with this CT style pre-preg carbon fibre rear diffuser. Crafted from ultra-lightweight material and finished in a deep high-gloss clear coat, it delivers a sharp motorsport look with everyday usability. Expect a precise, purposeful aesthetic that complements the factory lines while adding serious road presence.

Why enthusiasts choose this rear diffuser

  • Pre-preg carbon fibre construction for exceptional strength to weight
  • High-gloss finish for a premium, mirror-like shine
  • CT styling for an aggressive, performance-inspired rear end
  • Designed in-house for a clean, tailored appearance

Search-friendly highlights

Rear diffuser upgrade for G8X platform. Carbon rear bumper insert. Performance rear splitter. Carbon rear valance. Aerodynamic rear trim. Carbon styling upgrade. Track-inspired appearance. Performance aero for saloon and touring models. High gloss carbon rear bumper diffuser. Premium carbon rear spoiler alternative. G-series rear end enhancement.

Fitment

  • G80 saloon, 2021 onwards
  • G81 touring, 2021 onwards

Material and finish

  • Pre-preg carbon fibre
  • High-gloss clear coat
  • Ultra-lightweight construction

What to expect

We have installed this diffuser for customers who wanted a more aggressive rear end without compromising quality. Feedback has been consistently positive, praising the look, finish and overall transformation. If you are seeking a carbon rear bumper upgrade that pairs perfectly with other exterior carbon pieces, this is the one.

Installation

Professional fitting is recommended. Book your installation with MJ Modifications in Warwickshire. For a fitting quote, email info@mjmodifications.co.uk.

Ideal search terms

G8X rear diffuser, carbon rear splitter, carbon rear valance, rear bumper carbon insert, performance aero rear, CT style diffuser, carbon styling kit, high gloss carbon upgrade, saloon rear diffuser, touring rear diffuser, G80 rear bumper diffuser, G81 carbon rear, track look rear diffuser.

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