1 1

AUTOID

AUTOID GT Style Carbon Fibre Rear Diffuser Valance for BMW 5 Series G30 G31 2018+ - OEM Fit Carbon Rear Bumper Insert Splitter Trim - Gloss 2x2 Twill Weave - Fits 520i 530d xDrive 540i xDrive M550d xDrive - Saloon Sedan and Touring Estate Aero Upgrade

AUTOID GT Style Carbon Fibre Rear Diffuser Valance for BMW 5 Series G30 G31 2018+ - OEM Fit Carbon Rear Bumper Insert Splitter Trim - Gloss 2x2 Twill Weave - Fits 520i 530d xDrive 540i xDrive M550d xDrive - Saloon Sedan and Touring Estate Aero Upgrade

£510.15
£537.00 £510.15
Sale Sold out
Shipping calculated at checkout.

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.

GT inspired carbon rear valance for BMW 5 Series G30 G31

Give your 5 Series the motorsport look with this AUTOID carbon fibre rear bumper insert. Crafted to a factory-fit standard around original BMW fixings, this one piece GT design brings bold fins, a deeper profile and a premium 2x2 twill weave finish that transforms the saloon or touring without compromise. The fit is tight, the finish is superb and the presence is undeniable.

At MJ Modifications we have fitted this item on our own builds and for countless customers, and the verdict is the same every time: excellent alignment, rattle-free installation and a seriously aggressive rear end. If you are searching for a carbon rear valance, rear aero diffuser or carbon lower bumper piece for your G30 or G31, this AUTOID upgrade is the enthusiast’s choice.

Highlights

  • GT inspired carbon rear valance with deep fins and a performance look
  • Premium 2x2 twill carbon fibre with a high quality gloss finish
  • Factory-fit replacement that reuses BMW mounting points for clean installation
  • Direct swap using existing clips and 8 mm hardware for a secure, rattle-free fit
  • Sharper stance and a more purposeful rear profile for both saloon and touring
  • Backed by AUTOID with a 2 year warranty for peace of mind

Vehicle compatibility

BMW 5 Series G30 G31 2018 onwards, including the following engines and drivetrains:

  • 520i
  • 530d xDrive
  • 540i xDrive
  • M550d xDrive

Perfect search terms for buyers: BMW 5 Series rear valance G30, BMW G31 carbon rear bumper insert, 5er G30 G31 carbon rear trim, BMW estate rear diffuser fins, BMW saloon carbon rear aero.

What you receive

  • 1 x AUTOID GT style carbon fibre rear valance insert in 2x2 twill weave

Install and support

Designed as a direct replacement. Remove the original lower bumper trim by undoing the centre screws, then the remaining 8 mm screws, and gently releasing the upper clips. Offer up the AUTOID carbon piece, engage the clips and secure with the 8 mm fasteners. Confident DIYers can fit at home.

Prefer professional fitting? MJ Modifications in Warwickshire can install this upgrade and align it perfectly. Request a fitting quote at info@mjmodifications.co.uk.

Part number

AU-BG30RDGTCFR

Brand and warranty

Manufacturer: AUTOID

Warranty: 2 year AUTOID warranty

Why choose MJ Modifications

We live and breathe BMW styling and performance. Our team has hands-on experience with this AUTOID carbon rear diffuser on G30 and G31 platforms, delivering a factory-quality fit, stunning weave clarity and a dramatic, track-led aesthetic. Customers love the transformation and the precise alignment straight out of the box.

Search-friendly terms

BMW G30 carbon rear valance, G31 Touring carbon rear bumper trim, BMW 5 Series carbon rear insert, GT style rear fins, carbon fibre lower bumper piece, rear aero diffuser BMW 5er, BMW 5 Series styling upgrade, carbon fibre rear splitter insert, BMW 520i rear valance, 530d xDrive rear aero, 540i xDrive rear fins, M550d xDrive carbon rear, 2x2 twill carbon diffuser UK.

View full details