Precision Fitment
Each part is 3D-scanned against the platform and digitally modelled before tooling — so fitment is engineered, not approximated.
BMW M5 F10 Carbon Fibre Rear Diffuser
£419.00
Transform the rear view of your BMW M5 F10 with this carbon fibre rear diffuser.
- Material: Real carbon fibre with a visible weave
- Finish: Gloss clear coat with UV protection
- Fitting: Factory mounting points on the rear bumper
- Tracked delivery from the UK to Europe and worldwide
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.
Transform the rear view of your BMW M5 F10 with this carbon fibre rear diffuser. It replaces the plain lower section of the bumper with sculpted carbon fins that frame the exhaust tips.
Key features
- Sculpted fins for a motorsport rear end
- Designed around the factory exhaust layout
- UV-protected clear coat
- Fits the original mounting points
Compatibility
- BMW M5 F10 Saloon – 2011–2016
Fitment depends on the exact model, bumper and specification. If you are not sure, contact us with your VIN or a photo of the original part and we will confirm fitment before you order.
Rear diffuser specifications
| Brand | ASM Sports Tech |
|---|---|
| Part | Rear diffuser |
| Material | Real carbon fibre with a visible weave |
| Finish | Gloss clear coat with UV protection |
| Fitting | Factory mounting points on the rear bumper |
| In the box | Rear diffuser with fitting hardware |
| Platform | BMW M5 F10 |
| Part number (SKU) | ASMC039 |
Why choose the ASM rear diffuser for the BMW M5 F10
A diffuser is the defining part of a performance rear end and the piece most people notice from behind. Every ASM part is checked for fit and finish before it leaves us, and is backed by our warranty and UK-based support.
The part is made from real woven carbon fibre over a precise mould and finished with a UV-stable clear coat, so the weave stays deep and glossy and does not yellow in the sun. Not sure which carbon is right for you? Read our guide to dry vs wet carbon fibre.
Fitting and care
The diffuser mounts to the rear bumper using the factory fixing points, supplemented by screws where required. Fitting usually takes 1–2 hours; we recommend a body shop or experienced installer. Clean carbon surfaces with a soft microfibre cloth and pH-neutral products, and protect them with a UV-stable wax or ceramic coating. Step-by-step advice: How to protect and maintain carbon fibre parts.
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 rear diffuser
Which cars does this rear diffuser fit?
It is made for: BMW M5 F10 Saloon – 2011–2016. If your car has a different bumper, trim level or aftermarket parts, contact us with your VIN and we will confirm fitment before you order.
Is fitting difficult?
No special skills are needed for most owners, but take your time. The diffuser mounts to the rear bumper using the factory fixing points, supplemented by screws where required. If you prefer, any specialist or body shop can fit it quickly.
What is the difference between dry carbon and standard carbon fibre?
Dry pre-preg carbon is cured under heat and pressure with a controlled amount of resin, so it is lighter, stiffer and has a cleaner weave than wet-laid carbon. Our guide on wet vs dry carbon fibre explains the difference.
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 M5 F10 build
- BMW M2 F87 / M3 F80 / M4 F82 / M5 F10 / M6 Matte Carbon Fibre Steering Wheel Centre Trim
- BMW M2 F87 / M3 F80 / M4 F82 / M5 F10 / M6 Carbon Fibre Steering Wheel Lower Insert
- BMW 5 Series F10 / M5 F10 Carbon Fibre Rear Boot Lip Spoiler
- BMW 5 Series F10 / M5 F10 Carbon Fibre Rear Boot Spoiler – PSM Style
- All BMW M5 F10 parts
- More rear diffusers
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.
