REDSTAR performance downpipe for the new 2017- Audi B9 S4 & S5 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:

• 2017- Audi S4 B9 3.0 TFSI EA839 Limousine Avant
• 2017- Audi S5 B9 3.0 TFSI EA839 Cabriolet, Coupé, Sportback

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.
• OE-style Heat Shielding with ceramic inner liner - signature REDSTAR thermal management feature that reduces radiant heat from the exhaust pipes up to 70-80%. Being inspired by racing cars engineers who used it alot, we moved heat shielding to the tuning industry and made it available as an option for any REDSTAR product. Usual thermal wraps or ceramic coatings not even close in effectiveness and durability to the Heat Shielding. Please be aware of fake shielding when nothing but foil wrapped around the pipe. Without a sufficient ceramic wool layer inside and properly embossed foil it just doesnt work as expected.
• Tunable O2 spacers with replacement inserts - simple inexpensive way to trick ECU and deal with error codes. Not a 100% solution and we always recommend the ECU tune as the only proper way to do it, but that works and quite popular for some platforms. So if you need them - we have them and will include in the box.
• OEM Gaskets. Gaskets are not included in the package for default and available as an option. All the necessary hardware included. 

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 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.

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