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AUDI A5, S5 & RS5 B9 PERFORMANCE PARTS AND STYLING UPGRADES
The Audi A5, S5 and RS5 B9 combine premium design, modern technology and strong modification potential across Coupe, Sportback and Cabriolet body styles. Produced in pre-facelift form during the 2017–2019 period, the B9 platform remains a popular choice for drivers looking to improve exhaust sound, engine response, exterior appearance and overall road presence.
Our collection of Audi A5 B9, Audi S5 B9 and Audi RS5 B9 performance parts includes carefully selected upgrades for standard road cars, refined OEM+ builds and more aggressively modified vehicles. From performance exhausts and intake systems to carbon fibre exterior parts and interior accessories, EURO TUNED offers components for a wide range of styling and tuning goals.
PERFORMANCE UPGRADES FOR THE AUDI B9 PLATFORM
The ideal Audi B9 performance upgrade depends on the exact model, engine, drivetrain and intended use. A5 models are available with several petrol and diesel engines, while the S5 and RS5 use higher-performance powertrains that offer additional potential for exhaust, intake, cooling and software modifications.
Popular upgrades for the Audi A5, S5 and RS5 B9 may include:
- Audi B9 performance exhaust systems
- Valved cat-back and rear-section exhausts
- High-flow downpipes for compatible turbocharged engines
- Audi B9 cold air intake systems
- Turbo inlet and intake pipe upgrades
- Intercoolers and supporting cooling components
- Carbon fibre exterior styling parts
- Gloss black grilles and exterior trim
- Interior and driver-focused accessories
Performance components should always be selected for the exact engine and vehicle specification. Parts developed for an A5 may not be suitable for an S5 or RS5, even when the exterior body style appears similar.
AUDI A5, S5 AND RS5 PERFORMANCE EXHAUST SYSTEMS
An Audi B9 performance exhaust is one of the most effective ways to improve engine sound, exhaust flow and rear-end styling. A quality aftermarket system can provide a deeper and more distinctive exhaust note while making the vehicle feel more engaging during acceleration.
Valved Audi exhaust systems offer greater control over exhaust volume. With the valves closed, the system can retain a quieter and more refined tone for motorway journeys, residential areas and everyday driving. Opening the valves creates a louder and more aggressive sound when a stronger performance character is desired.
Depending on the model, available exhaust options may include:
- Audi A5 B9 performance exhaust systems
- Audi S5 B9 valved exhaust systems
- Audi RS5 B9 performance exhausts
- Cat-back and axle-back exhaust configurations
- Resonated and non-resonated systems
- Single-exit, dual-exit and quad-exit conversions
- Polished, black, titanium-style and carbon fibre exhaust tips
The final exhaust volume and tone can vary depending on the engine, catalytic converters, OPF or GPF filters, downpipes, resonators and engine software fitted to the vehicle.
AUDI B9 DOWNPIPES AND EXHAUST FLOW UPGRADES
An upgraded Audi B9 downpipe can reduce exhaust restriction after the turbocharger, increase exhaust volume and support additional tuning potential on compatible engines. Downpipes are commonly combined with a performance exhaust and suitable software as part of a more complete tuning package.
High-flow catted downpipes provide a balance between improved flow, stronger sound and everyday usability. Catless downpipes are intended for maximum flow and a more aggressive exhaust note but may not comply with emissions, inspection or road-use regulations in every country.
Compatibility varies significantly between A5, S5 and RS5 models, as well as between petrol and diesel engines. Local regulations and vehicle-specific requirements should always be checked before installation.
AIR INTAKES AND TURBO INLET UPGRADES
An Audi B9 cold air intake can improve induction sound and support more efficient airflow into the engine. Intake systems are especially popular with owners looking for a stronger turbocharger sound and a more engaging acceleration experience.
Depending on the engine, an intake upgrade may replace the original airbox, filter, intake pipework or turbo inlet components. Selected systems feature carbon fibre construction, combining performance-focused airflow with a premium engine-bay appearance.
INTERCOOLERS AND COOLING COMPONENTS
Turbocharged A5, S5 and RS5 models can benefit from upgraded cooling components designed to manage charge-air temperatures more effectively. A larger Audi B9 intercooler can help maintain more consistent performance during repeated acceleration, spirited road driving or track use.
Cooling upgrades are particularly relevant for tuned vehicles running increased boost or frequently driven under demanding conditions. Compatibility with the original bumper, sensors, pipework and existing modifications should be confirmed before purchase.
AUDI A5, S5 AND RS5 B9 CARBON FIBRE PARTS
The sharp body lines of the B9 platform provide an excellent base for Audi B9 carbon fibre parts. Carefully selected exterior upgrades can create a lower, wider and more motorsport-inspired appearance while complementing the premium factory design.
Popular Audi B9 styling upgrades may include:
- Audi B9 carbon fibre front splitters
- Front bumper corner extensions and canards
- Audi B9 side skirt extensions
- Carbon fibre rear diffusers
- Boot spoilers and Sportback spoiler extensions
- Carbon fibre mirror covers
- Gloss black and carbon fibre front grilles
- Carbon fibre exhaust tips
- Additional aerodynamic and exterior trim components
These parts can be installed individually for a clean OEM+ finish or combined into a more complete Audi B9 carbon fibre styling package. Matching the front splitter, side skirts, spoiler and rear diffuser helps create a consistent design across the entire vehicle.
FRONT SPLITTERS AND SIDE SKIRT EXTENSIONS
An Audi A5, S5 or RS5 B9 front splitter adds definition to the lower bumper and creates a more planted front-end appearance. Available designs range from subtle factory-inspired additions to larger motorsport-style splitters for more aggressively modified cars.
Audi B9 side skirt extensions visually lower the side profile and help connect the styling between the front and rear of the vehicle. They are particularly effective when installed with a matching front splitter and rear diffuser.
Front bumper design differs between A5, S5 and RS5 models. Products developed for one bumper configuration may not fit another without modification, even when the vehicles share the same B9 platform.
REAR DIFFUSERS AND EXHAUST CONVERSIONS
An Audi B9 rear diffuser transforms the lower rear bumper and enhances the area surrounding the exhaust outlets. Different diffuser designs are available for factory exhaust layouts, upgraded exhaust tips and complete performance exhaust conversions.
Customers planning a dual-exit or quad-exit conversion should select a diffuser that matches the intended tailpipe arrangement. The correct exhaust system, mounting points and rear pipework must also be considered before installation.
Diffuser compatibility can vary between Coupe, Sportback and Cabriolet models, as well as between A5, S5 and RS5 bumpers.
SPOILERS, GRILLES AND EXTERIOR ACCESSORIES
An aftermarket Audi B9 spoiler can enhance the rear profile while retaining the premium character of the vehicle. Options may include subtle boot lip spoilers, Sportback spoiler extensions and more pronounced carbon fibre designs.
Audi B9 gloss black grilles, carbon fibre mirror covers and replacement exterior trim can reduce factory chrome details and create a cleaner, more modern appearance. These smaller upgrades are ideal for customers looking to personalise their car without replacing major body panels.
AUDI B9 INTERIOR UPGRADES
The cabin can also be personalised with Audi A5, S5 and RS5 B9 interior accessories. Depending on product availability, upgrades may include carbon fibre steering wheel trim, extended paddle shifters, replacement steering wheels, gear selector components and centre-console accessories.
Interior styling parts allow owners to continue the exterior carbon fibre theme inside the vehicle while improving the appearance and feel of the controls used during every journey.
CHOOSING THE CORRECT AUDI A5, S5 OR RS5 B9 PARTS
Although the A5, S5 and RS5 share the B9 platform, many exterior and mechanical components are model-specific. Before ordering Audi B9 aftermarket parts, consider:
- Audi A5, S5 or RS5 model
- Coupe, Sportback or Cabriolet body style
- Petrol or diesel engine
- Exact engine code and power output
- Front-wheel drive or quattro drivetrain
- 2017, 2018 or 2019 production year
- Standard, S line, S5 or RS5 bumper design
- OPF or GPF equipment
- Original exhaust outlet configuration
- Existing performance or styling modifications
Always check the complete product title, description and listed fitment before purchase. Customers who require additional confirmation can contact EURO TUNED with their model, body style, production year, engine details, registration number or VIN.
BUY AUDI B9 PERFORMANCE PARTS FROM EURO TUNED
EURO TUNED is a European performance and styling specialist based in Ireland, supplying carefully selected aftermarket upgrades for Audi vehicles and other enthusiast platforms. Our range includes Audi performance parts, valved exhaust systems, downpipes, air intakes, intercoolers, carbon fibre body parts and exterior styling accessories.
Every product is selected with fitment, construction quality, appearance and real-world usability in mind. Whether you are modifying a daily-driven A5, upgrading an S5 or building a more aggressive RS5, our B9 collection offers options for different budgets, body styles and performance goals.
EURO TUNED supplies customers throughout Ireland and Europe, with worldwide shipping available to many international destinations. Shop Audi A5, S5 and RS5 B9 performance parts online and upgrade your 2017–2019 Audi with premium styling and tuning components.