The Narkos Performance stainless steel decat downpipe is designed for maximum power and sound on your VW Golf R MK7/MK7.5, Audi S3 8V, and Seat Leon Cupra 280/290/300. Built from SS304 aircraft-grade stainless steel and precision TIG welded, this downpipe delivers strength, performance, and durability. Key Features: Made from SS304 aircraft-grade stainless steel for superior strength 3.5-inch off the turbo tapering to 3-inch for ultimate exhaust flow Mandrel-bent design for smoother gas flow and reduced backpressure Gains of up to 20 bhp and improved throttle response and much more with a Tune Faster Turbo spool - Earlier torque activation in the RPM Range Aggressive exhaust note for a sportier driving experience Helps lower EGTs and improves turbo efficiency Significant weight saving compared to stock catalytic converter Supplied with adaptors for OEM exhaust and 3-inch cat-back systems Covered by Narkos Performance lifetime warranty Compatible Vehicles: Volkswagen Golf R MK7 / MK7.5 (2013-2018) PRE-OPF Audi S3 8V Quattro (2013-2018) PRE-OPF Can also fit OPF model vehicles however Sensors will need to be unplugged - Any good mechanic can do this. Why Upgrade to a Narkos Downpipe?By removing the restrictive catalytic converter, this downpipe allows your turbo to spool faster, reduces backpressure, and produces a deeper, more aggressive exhaust tone. Perfect for Stage 2 remaps and track use.