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Confidence Programme
Developed and inspected under a more disciplined quality direction, helping the buyer feel greater certainty in what they are ordering.
Audi A5 / S5 B9 (2017–2021) Carbon Fibre Rear Diffuser with LED
£599.00
Constructed from genuine carbon fibre with LED to elevate the rear aesthetic with a sleek, aggressive appearance.
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Need Fitment or Product Guidance?
Speak directly with ASM Sports Tech for live WhatsApp assistance on fitment, lead time, compatibility, or build direction before ordering.
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Confidence Is Built Into the Direction.
Premium ownership does not begin at delivery. It begins with material discipline, fitment philosophy, and the confidence that every component belongs to a more serious product standard.
Assurance Standard
Trust should feel designed into the product experience — not added later as reassurance.
Every ASM Sports Tech component is presented through a more resolved ownership philosophy: cleaner development direction, stronger fitment intent, and more premium support before and after purchase.
View Confidence Programme
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OEM Precision Fitment
Engineered using 3D scanning and digital modelling to achieve cleaner fitment logic and stronger visual integration with the platform.
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Performance Engineering
Lightweight composite construction, premium finish discipline, and stronger structural intent all contribute to a more resolved ownership outcome.
Transform the rear profile of your Audi A5 or S5 B9 (2017–2021) with the ASM Sports Tech Carbon Fibre Rear Diffuser with Integrated LED Light, designed to elevate both the aesthetics and aerodynamic performance of your vehicle.
Crafted from carbon fibre, this diffuser delivers exceptional rigidity and lightweight construction while maintaining flawless surface quality. The integrated LED brake light adds a distinctive motorsport-inspired element, improving visibility and giving your Audi a dynamic, high-performance appearance.
Compatible Models:
- 2017-2021 Audi A5 S-LINE B9
- 2017-2021 Audi S5 B9
Features & Details
Custom Fit for Audi A5/S5 B9
Designed to match the precise specifications of the Audi A5 and S5 B9 models, ensuring a flush, factory-like finish.
Premium Carbon Fibre Construction
Lightweight yet sturdy, our diffuser enhances aerodynamics and adds a sleek, sporty edge to your vehicle.
Integrated LED Light
Improve visibility and safety with innovative LED that provide a contemporary look and enhanced road presence.
High-Performance Aerodynamics
Boost your car’s performance by reducing drag and increased stability, especially at high speeds.
Enhanced Aesthetic Appeal
Adds a sporty, aggressive look to your Audi A5/S5 B9, setting it apart on the road.
These features combine to make carbon fibre a favoured material for car enthusiasts who value performance, style, and innovation.
ASM SPORTS TECH
Ownership Questions, Answered.
Clearer guidance before commitment. This section is designed to answer the final questions around fitment, installation, material direction, ordering, and support.
Compatibility is always based on the product title, listed fitment scope, and vehicle platform. If you are unsure before ordering, use the live WhatsApp support option and we can confirm the correct application before purchase.
Yes. Professional installation is strongly recommended, especially for carbon fibre aero parts, exhaust components, and platform-specific upgrades where alignment, finish protection, and correct hardware positioning matter.
Material specification depends on the product direction, but ASM Sports Tech focuses on stronger finish discipline, cleaner visual consistency, and more resolved platform-specific presentation across its premium programmes.
Lead time depends on whether the product is in stock, built to order, or part of a more exclusive production direction. The estimated timeline shown on the product page should be used as the main reference before checkout.
Yes. If you need help with fitment, visual direction, material choice, or build planning, use the WhatsApp consultation block on the page and we will guide you before you place the order.
Yes. Worldwide shipping is available across a wide range of ASM Sports Tech product lines. Shipping method and transit timing vary depending on product category, destination, and dispatch origin.
ASM SPORTS TECH
Authorised Dealer Access
For selected regions and projects, ASM Sports Tech can also be approached through an authorised partner network. This creates a more local route into the ownership experience while maintaining the same product direction.
Global Route
Prefer a more local path into the programme?
If you are ordering internationally, planning a wider build, or simply prefer a more regional point of contact, dealer access can provide a cleaner route into the ASM Sports Tech product direction.
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Regional Access
Selected customers may prefer a more local path into the product programme through an authorised ASM partner.
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Project-Based Ordering
Wider builds and multi-part upgrade directions can often benefit from a more coordinated route before final order placement.
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Direct or Dealer Route
Whether you proceed directly with ASM Sports Tech or through an authorised partner, the objective remains the same: a more resolved ownership experience.
ASM SPORTS TECH
Complete Your Build
Continue the programme with matching components selected to complement the visual direction, fitment logic, and overall presence of the build.
