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The Audi S1 is the sporty, quattro all-wheel-drive variant of the compact A1, the smallest and most agile of Audi's high-performance models.
Fitting a Milltek performance exhaust to the Audi S1 means unlocking more from its engine: the sound gains character, weight drops versus the original and throttle response becomes more immediate — all in T304L stainless steel, made in England and tested at the Nürburgring.
For the Audi S1, Milltek's catalogue includes: Cat-back, HJS Tuning ECE Downpipes, Large Bore Downpipe and Hi-Flow Sports Cat, Large-bore Downpipe and De-cat. Exhausts with road homologation state so in the product description and are delivered with the relevant certificate.
Browse the products below to find the exhaust compatible with your Audi S1. Looking for another Audi, find the full range here: All Audi models by Milltek.
There are 11 products.
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Milltek SSXAU620
HJS Tuning ECE Downpipes
For fitment to the OE system only
Before ordering:
Please check installation details on the manufacturer's website.
Milltek SSXAU600
Large-bore Downpipe and De-cat
Must be fitted with the Milltek Sport cat-back system and requires a Stage 2 ECU remap.
Before ordering:
Please check installation details on the manufacturer's website.
Milltek SSXAU495
Large Bore Downpipe and Hi-Flow Sports Cat
Must be fitted with the Milltek Sport cat-back system and requires a Stage 2 ECU remap.
Before ordering:
Please check installation details on the manufacturer's website.
Milltek SSXAU494
Cat-back
Non-resonated (louder). Quad Cerakote Black Round Tips
Black GT90
Before ordering:
Please check installation details on the manufacturer's website.
Milltek SSXAU493
Cat-back
Non-resonated (louder). Quad Cerakote Black Oval Tips
Black Oval
Before ordering:
Please check installation details on the manufacturer's website.
Milltek SSXAU492
Cat-back
Non-resonated (louder). Quad Polished Round Tips
Polished GT90
Before ordering:
Please check installation details on the manufacturer's website.
Milltek SSXAU491
Cat-back
Non-resonated (louder). Quad Polished Oval Tips
Polished Oval
Before ordering:
Please check installation details on the manufacturer's website.
Milltek SSXAU490
Cat-back
EC-Approved. Resonated (quieter). Quad Cerakote Black Round Tips.
Black GT90
Before ordering:
Please check installation details on the manufacturer's website.
Milltek SSXAU489
Cat-back
EC-Approved. Resonated (quieter). Quad Cerakote Black Oval Tips.
Black Oval
Before ordering:
Please check installation details on the manufacturer's website.
Milltek SSXAU488
Cat-back
EC-Approved. Resonated (quieter). Quad Polished Round Tips
Polished GT90
Before ordering:
Please check installation details on the manufacturer's website.
Milltek SSXAU487
Cat-back
EC-Approved. Resonated (quieter). Quad Polished Oval Tips.
Polished Oval
Before ordering:
Please check installation details on the manufacturer's website.
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