Audi S3 (8V) Saloon (2013–2018) Front Downpipes – Sport Cats / De-Cat

Price range: £388.24 through £577.34

The ASM PERFORMANCE exhaust sections for the Audi S3 Quattro are meticulously engineered to improve your vehicle sound.

Warranty

All ASM Sports Tech components are produced using motorsport-grade materials and manufacturing standards same as OEM.

Our components are covered by an 12-month to lifetime structural warranty, depending on the component and usage conditions. Full warranty details can be viewed on our warranty page.

Shipping

  • – Orders for in-stock items placed before 20:00 GMT are despatched the same day.
  • – Free UK delivery on all orders.
  • – Worldwide shipping availalbe.
  • – Fully tracked couriers services.

Returns

At ASM Sports Tech, every component is developed with precision and quality control.

If for any reason you are not satisfied with your purchase, returns or exchanges can be arranged within 14 days of delivery.

Please visit our Returns Page for full details.

All ASM Sports Tech components are supplied with installation hardware where required.

For optimal fitment and performance, proffesional installation is strongly recommended.

All our carbon fibre components are produced with OEM-level tolerances.

Some ASM Sports Tech components are handcrafted to order.

– In-stock items are despatched immediatly.

– Made-to-order components typically require 2-6 weeks production time.

If a product is temporarily unavailable, our team will contact you within 24 hours to confirm production timing or offer available alternatives.

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CONFIDENCE PROGRAMME

Every ASM Sports Tech component is developed and inspected under our Confidence Programme, ensuring verified materials and trusted ownership support.
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OEM PRECISION FITMENT

Engineered using 3D scanning and digital modeling to achieve factory-level fitment and seamless integration with each vehicle platform.
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PERFORMANCE ENGINEERING

Lightweight composite construction combined with structural rigidity to enhance aerodynamic performance and visual presence.

Unlock the full performance potential of your Audi S3 (8V) Saloon (2013–2018) with the ASM Performance Front Downpipes – available in both Sport Cat and De-Cat versions. Designed for enthusiasts seeking maximum power gains and improved exhaust flow, these downpipes deliver exceptional sound and performance benefits.

Constructed from high-grade T304 stainless steel, each downpipe is TIG-welded and precision-engineered for durability, flow efficiency, and temperature resistance. The Sport Cat version features a 200-cell high-flow catalytic converter, balancing emissions compliance with enhanced performance. The De-Cat version offers unrestricted exhaust flow for maximum turbo response and horsepower gains (recommended for off-road or track use).

Our sports exhaust selection is fully backed with a lifetime warranty, ensuring quality assurance.

Features & Details

  • Substantial power increase
  • Specially designed smooth transition for optimized flow
  • Improved spool up speed and throttle response
  • Extended turbo lifespan
  • Lowering under hood temperature
  • Enhanced performance sound
  • 100% Easy and secure bolt-on installation
  • Fully tig welded and back purged crafting
  • Top-tier 304L stainless steel with a 2.00mm thick wall
  • Compliant with both LHD and RHD vehicles
  • Backed by a lifetime warranty

These will fit the following models:

  • VW GOLF 2.0L GTI MK7, CLUBSPORT AND CLUBSPORT S 2013+ Audi S3 (8V) Saloon (2013–2018) Front Downpipes – Sport Cats / De-Cat
  • Golf MK7 R 2.0 TSI 300bhp Audi S3 (8V) Saloon (2013–2018) Front Downpipes – Sport Cats / De-Cat
  • Golf MK7 R Estate, Variant 2.0 TSI 300bhP 2015 onwards Audi S3 (8V) Saloon (2013–2018) Front Downpipes – Sport Cats / De-Cat
  • Golf MK7.5 R 2.0 TSI 310bhp 2017 onwards Audi S3 (8V) Saloon (2013–2018) Front Downpipes – Sport Cats / De-Cat
  • Audi S3 8v 2.0 TFSI Quattro 3 Door 2013 onwards Audi S3 (8V) Saloon (2013–2018) Front Downpipes – Sport Cats / De-Cat
  • Audi S3 8v 2.0 TFSI Quattro Sportback 2013 onwards Audi S3 (8V) Saloon (2013–2018) Front Downpipes – Sport Cats / De-Cat
  • Audi S3 8v 2.0 TFSI Quattro Saloon 2013 onwards Audi S3 (8V) Saloon (2013–2018) Front Downpipes – Sport Cats / De-Cat
  • Compatible with both RHD and LHD models Audi S3 (8V) Saloon (2013–2018) Front Downpipes – Sport Cats / De-Cat

What is the difference between a sport cat and a decat?

Sport Cat Downpipes

Catalytic Converter Included: Sport cat downpipes include a high-flow catalytic converter. This helps reduce exhaust emissions while still allowing for increased flow compared to standard catalytic converters.

Emissions Compliance: They are designed to be street-legal in many areas, as they still filter harmful emission, though regulations can vary by region.

Performance: Sport cat downpipes strike a balance between performance and emissions compliance. They offer a noticeable increase in horsepower and torque compared to stock downpipes, but might not be as free-flowing as decat downpipes.

Sound: The sport cat downpipes provide a moderate increase in exhaust sound over the stock system.

Decat Downpipes

No Catalytic Converter: Decat downpipes eliminate the catalytic converter entirely, resulting in zero filtration of exhaust gases. 

Higher Performance: They allow for maximum exhaust flow, which can result in significant performance gains, particularly for turbocharged engines.

Emissions Non-Compliance: Decat downpipes are typically illegally for street use in most regions due to their complete lack of emissions control. They are generally indented for track use or off-road racing.

Emissions Non-Compliance: They produce a louder and more aggressive exhaust note.

The de-cat exhaust version is available for motorsport and off-road use exclusively worldwide.