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Cayenne Turbo 9YA 4.0 V8 Downpipes

New product

Not a secret the new Cayenne Turbo 4.0 V8 engine is almost identical to the Lamborghini Urus engine. That means it can sound as good as Urus or even better! By replacing massive OEM 600cpsi catalytic converters with REDSTAR downpipes we unleash all the potential that biturbo V8 has. Combined with ECU tune our downpipes will hold any power you can get even with big-turbo upgrade.

More details


  • No Heat Shield
  • Includes Heat Shield
  • Competition (Catless)
  • GESI GEN1 UHO 300cpsi
  • GESI GEN2 400cpsi
  • HJS HD 200cpsi
  • No Gaskets
  • Include Gaskets
  • No
  • Yes

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Data sheet

Engine Type 4.0 TSFI V8 Twin Turbo

More info

More and more customers prefer catted downpipes over the catless and there is many reasons for. In case of flow and performance, catted downpipes at least on 90% as effective as a straight pipes, while obenefit with sound quality (not as raspy, deeper tone), no gas smelling, passing possible inspections with no error codes* or CEL.

Compatible Vehicles:

  • 2018- Porsche Cayenne Turbo / Cayenne Turbo Coupe 
  • 2019- Porsche Cayenne Turbo S E-Hybrid / Cayenne Turbo S E-Hybrid Coupe 
  • 2021- Porsche Cayenne Turbo GTS / Cayenne GTS Coupe 

Available Options: 

  • 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.
  • HJS HD 200cpsi cats offer better flow but compromise on emissions reduction and possible random cel issues.
  • GESI UHO 300 cell- high-flow Metal Core Catalytic Converters. Rated 580-850hp each. EPA certified for use on OBD2 vehicles (1996 and newer) 49 States. 
  • GESI GEN2 400cpsi- catalytic converters rated for 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) and will address Check Engine light issues with proper engine setup. 
  • Opional Gasket set 
  • OPF Tubes - For EU cars only 

Main Features:

  • 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 2.0mm wall 304 stainless steel
  • OEM-spec flanges
  • All brackets and mounts as on OEM unit


*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.