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REDSTAR performance downpipe for the new 2018- Audi B9 SQ5 3.0 TFSI with single-turbo 3.0 TFSI engine. Our downpipes utilize big bore design with smooth transitions for maximum flow efficiency. REDSTAR is the only manufacturer who offer so many modifications to choose from. It allows you to get the downpipe that exactly matches your needs and budget. Feel free to ask our tech any questions.

Compatible Vehicles:

  • 2018- Audi SQ5 B9 3.0 TFSI EA839

Available options:

  • HJS Ultra High-Performance catalytic converters. Made in Germany most reputed high flow converters for their outstanding characteristics, quality and durability. We offer selection between 200cpsi Euro 5 HD matrix or 200cpsi Euro 6 HD matrix. It is hard to achieve Euro 6 emission requirements with only 200 cpsi matrix, what requires big core diameter and big precious metals loading. That causes significant price increase for those catalytic converters. But we still have alternative options. >> Read more about HJS cats.
  • GESI GEN2 400cpsi made in Canada catalytic converter rated 1000hp for 5in core or 1200hp for 6in core. New GEN2 series provides a significant improvement in exhaust flow over stock and offers the latest emissions technology for model year 2017 and newer. EPA Compliant catalytic converters have been third-party lab tested to meet or exceed local emissions standards in North America (excluding California) and will address Check Engine light issues with proper engine setup. Read more about G-Sport by GESI cats.
  • Double-layer heatshielding is used to protect surrounding parts, wires, and hoses against radiant heat from the downpipes.
    Integrated thermal insulation reduces surface temperature up to 70%! What makes it an absolute winner, compared to usual thermal wrapping or ceramic coatings.
    It’s very important not just for safety reasons but also affects engine performance by reducing the underhood temperature. We highly recommend this option, especially for catted downpipes.

Main Features of REDSTAR produsts:

  • Significant power gain
  • Faster spool up and better throttle response
  • Increasing the life of the turbos 
  • Reducing underhood temperature
  • Adds a very nice tone to the exhaust
  • 100% bolt-on installation
  • 100% TIG welded and back purged
  • Highest quality 2mm wall 304 stainless steel
  • OEM-spec flanges
  • All brackets and mounts as on OEM unit

Why Buy Our Products?

You buy directly from the manufacturer and all the products 100% handmade in Russia. Not just another relabeled China/Taiwan stuff.
We don't compromise on quality! No mild steel flanges, no weak clamp joints, no other cost reduction tricks.
Free flow is our priority! No steps and restrictive areas, only smooth transitions, bigger diameters, and optimized design.
Our welds and whole craftsmanship better than most of the competitors. Pictures speak for themselves.
5-year warranty against any defects given to the original owner.


*This product is not designed to meet any emissions/noise standards and is not for street or highway use. This product is not certified and may not be legal for use on emissions controlled vehicles in any country/jurisdiction. This product is NOT C.A.R.B. compliant and not for sale or use in California, USA. All the new cars have different ECU calibrations at different countries. While we claim HJS catted downpipes as a CEL-FREE modification, we can't 100% guaranty no error codes for all makes and models worldwide.