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REDSTAR EXHAUST downpipes for the Audi B9 RS5 / F5 RS4 with Porsche 2.9L. Our downpipes utilize a big bore design with smooth transitions for maximum flow efficiency. Long cones used to reduce the OEM 127mm turbo flanges to 89mm main diameter, which then goes down with second transition to 76mm.
GESI GEN2 400cpsi- catalytic converters rated for up to 1200hp. The new GEN2 series provides a significant improvement in exhaust flow over stock and offers the latest emissions technology. EPA Compliant catalytic converters have been third-party lab tested to meet or exceed local emissions standards in North America (excluding California). Ideal for forced induction and capable of withstanding up to 1,700F/ 925C core temp. At REDSTAR we rank them as the ones with the best performance/pollution reduction balance.
HJS HD 200cpsi- Ultra high-performance 200 cell made in Germany metal core catalytic converters. These extremely robust converters allow you to achieve flow numbers close to straight pipes while meeting strict Euro 6 emissions standards.
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 racecar engineers who uses it alot, we moved heat shielding to the tuning industry and made it available as an option for any REDSTAR products. Usual thermal wraps or ceramic coatings are not even close in effectiveness and durability to our Heat Shielding. Please be aware of fake shielding when it is nothing but foil wrapped around the pipe. Without a sufficient ceramic wool layer inside and properly embossed foil it will not work as expected.
- Significant power gain
- Flow-optimized smooth transition design
- Faster spool up and better throttle response
- Increasing the life of the turbos
- Reducing under hood temperature
- Adds a very nice tone to the exhaust
- 100% bolt-on installation
- 100% TIG welded and back purged
- Highest quality 2.0mm wall 304L stainless steel
- OEM-spec V-band flanges
- All brackets and mounts as on OEM unit
- LHD/RHD Compliant
- Limited lifetime warranty
- RedStar Exhaust Downpipes
For Off-Road Use Only
Not intended for use on public highways
May Fit Selected Vehicle
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|B9 RS5 2.9L Turbo V6
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