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O-SPEC High-Flow Downpipes for Audi RS4 & RS5 B9 are expertly crafted from premium T304 Stainless Steel, featuring CNC components and flanges. Each piece is TIG welded, available in de-catted or sport catted formats, ensuring optimum performance. O-SPEC Downpipes fit seamlessly, requiring no modifications with OEM flanges for easy installation. With O-SPEC products, you’re covered with a 100% Fitment Guarantee and a Lifetime Warranty for true peace of mind.

O-SPEC for Audi RS4 & RS5 B9 Downpipe Features:

  • Designed in Australia for the Australian harsh environment.
  • Suitable for RHD & LHD Vehicles
  • High-Flow Design Tested up to 1,000HP
  • 3.5″ Stainless Steel Construction
  • Inconel Heat Shielding with Internal Ceramic Lining
  • Precision CNC machined flanges and fittings
  • O-SPEC 100% Fitment Guarantee
  • O-SPEC LIFETIME Warranty

Compatible for 2018-2020 Audi RS4 and RS5 B9.

Want Performance Modifications & Upgrades?

Get your car running better than it ever has with customised performance modifications to suit your liking. Our skilled mechanics can work from the simplest rewiring to an all-out engine upgrade. We use only top-of-the-line parts in all of our modification services. Big or small, we’ve got you covered.

Our in-house dynamometer ensures you get speedy service as well as accurate before and after readings with every modification done.

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NEW PRODUCT: O-SPEC Downpipe for Audi RS4 & RS5 B9 2018 - 2020 – Gallery: