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+
- Golf MK7 R 2.0 TSI 300bhp
- Golf MK7 R Estate, Variant 2.0 TSI 300bhP 2015 onwards
- Golf MK7.5 R 2.0 TSI 310bhp 2017 onwards
- Audi S3 8v 2.0 TFSI Quattro 3 Door 2013 onwards
- Audi S3 8v 2.0 TFSI Quattro Sportback 2013 onwards
- Audi S3 8v 2.0 TFSI Quattro Saloon 2013 onwards

- Compatible with both RHD and LHD models

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.