Precision Fitment
Each part is 3D-scanned against the platform and digitally modelled before tooling — so fitment is engineered, not approximated.
BMW 7 Series G11 / G12 LCI Carbon Fibre Rear Diffuser
£890.00
Upgrade your BMW 7 Series G11 or G12 LCI with the ASM Sports Tech Carbon Fibre Rear Diffuser, engineered for OEM precision.
- Tracked delivery
- 14-day returns
- ASM warranty
Specialist online — replies in minutes
Speak to ASM before you order
Straight answers on fitment, lead time and build direction — direct from the team that engineers it.
Open WhatsApp LineDoubt removed
before commitment
Every component leaves on one standard: measured fitment, disciplined materials, and a specialist on the line before and after you order. The proof sits below — not the promise.
Composite Construction
Pre-preg carbon and lightweight composite, finished to a consistent standard and built for structural intent — not cosmetic weight.
Support, Both Sides of the Sale
A specialist answers fitment, lead time and compatibility before you order — and stays reachable after it ships.
Introducing the BMW G11/G12 7 Series LCI Carbon Fibre Rear Diffuser, a sleek, high-performance upgrade designed exclusively for your luxury sedan.
Upgrade your 7 Series with this premium carbon fibre rear diffuser and enjoy the perfect blend of style, performance, and functionality.
Compatible Models:
- 2020-Present BMW G11 G12 7 Series (M-Sport Only )
Key Features:
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Carbon Fibre – For high strength and low weight.
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OEM-Style Design – complements 7 Series luxury aesthetics with a sporty edge.
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Gloss Finish – UV-protected gloss clear coat for durable brilliance.
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OEM Fitment – 3D-scanned for precise alignment and easy installation.
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Aerodynamic Efficiency – enhances airflow and rear-end stability.
Upgrade your BMW 7 Series G11 or G12 LCI with the ASM Sports Tech Carbon Fibre Rear Diffuser, engineered for OEM precision, aerodynamic refinement, and a premium luxury-sport finish.
Rear diffuser specifications
| Brand | ASM Sports Tech |
|---|---|
| Part | Rear diffuser |
| Material | Carbon fibre |
| Platform | BMW 7 Series G11 / G12 |
| Part number (SKU) | ASM776 |
Why choose the ASM rear diffuser for the BMW 7 Series G11 / G12
The rear diffuser frames the exhaust and finishes the back of the car. The ASM carbon fibre diffuser for the BMW 7 Series G11 / G12 gives the rear bumper a deeper, more motorsport-inspired profile and helps the air leaving the underbody exit cleanly, tying the rear end together visually.
It is made from real carbon fibre, not a carbon-look wrap or print, so it is light, rigid and shows a genuine woven finish. Read more in our guide to dry vs wet carbon fibre.
Fitting and care
We recommend fitting by an experienced body shop or tuning specialist. Test-fit every part before final installation, prepare mounting surfaces carefully and use the supplied or recommended fixings. Wash carbon parts like the paintwork, avoid abrasive polishes and protect the clear coat with a quality wax or sealant. Step-by-step advice: How to install a rear diffuser.
Delivery, returns and warranty
Every order ships from the UK with tracked delivery to the UK, Europe and worldwide. Delivery options and costs are shown at checkout and explained in our shipping policy. Unused items in original condition can be returned within 14 days, and return shipping is paid by ASM – see the refund policy. Manufacturing defects are covered by the ASM warranty.
Questions about this part
Which cars does this rear diffuser fit?
It is made for the BMW 7 Series G11 / G12. Fitment depends on the exact model, bumper and specification, so if your car has a facelift (LCI) bumper, a different trim level or other aftermarket parts, contact us with your VIN or a photo and we will confirm fitment before you order.
Is this real carbon fibre?
Yes. It is made from genuine carbon fibre, not a carbon-look wrap or hydro-dipped plastic. Learn how to tell the difference in how to spot fake carbon fibre parts.
Do you ship to my country?
Yes. We ship from the UK to the UK, Europe and worldwide with tracked delivery. Prices can be shown approximately in EUR or USD, and orders are charged in GBP.
Complete your BMW 7 Series G11 / G12 build
BMW 7 Series G11 / G12 Carbon Fibre Mirror Replacements
BMW 7 Series G11 / G12 Carbon Fibre Rear Spoiler – V Style
BMW 740i G11/G12 Front Downpipes Sports Cat / Decat Version B58 Engines
BMW G20 / G30 / G11 / G15 / X3 G01 / X5 G05 Dry Carbon Fibre Paddle Shifter Extensions (Blue Marks)- All BMW 7 Series G11 / G12 parts
- BMW 7 Series carbon and performance parts
- More diffusers
- ASM aerodynamics programme
The questions
worth asking first
Fitment, installation, materials, lead time and support — the answers that settle the last doubts before you order. Anything not covered, the specialist line is one tap away.
Fitment is defined by the product title, the listed application scope and your platform. If you're unsure, open the WhatsApp line and a specialist will confirm the correct application before you order.
Yes — particularly for carbon aero, exhaust components and platform-specific upgrades, where alignment, finish protection and correct hardware positioning matter to the result.
It depends on the part, but the standard is consistent: disciplined finish, clean visual consistency and resolved platform-specific presentation. Pre-preg carbon and lightweight composite where the application calls for it.
It depends on whether the part is in stock or built to order. The estimated timeline on the product page is the reference to use before checkout — and the specialist line can confirm it for your exact spec.
Yes. For fitment, visual direction, material choice or build planning, use the WhatsApp block on this page and a specialist will guide you before you place the order.
Yes — worldwide shipping is available across most ASM Sports Tech lines. Method and transit time vary by product category, destination and dispatch origin.
Two ways
to order
Order directly with ASM Sports Tech, or through an authorised partner in your region. Same components, same standard — whichever route fits the build.
Regional Access
Prefer a local point of contact? An authorised ASM partner in your region can handle the order end to end.
Project-Based Ordering
Multi-part builds and full upgrade directions are best coordinated as one order — we'll plan it with you before placement.
Direct or Dealer
Order direct from ASM or through a partner — the parts, the fitment standard and the support are identical either way.
ASM Sports Tech — The Programme
Complete the build
Matching components for the same platform — selected to fit alongside what you're ordering and finish the build as one resolved direction.
