Redstar Stelvio Downpipes

Catted version of our REDSTAR EXHAUST downpipes for the Alfa-Romeo Giulia 2.9 Quadrifoglio. No CEL issues, no ECU tuning required. Well balanced, not raspy exhaust tone combined with low emission no smell operation.

Compatible Vehicles:

2017- Alfa-Romeo Giulia Quadrifoglio 2.9L F154 twin-turbocharged V6

Available Options:

GESI UHO 400cpsi catalytic converters-Made in Canada. Provides significant improvement in exhaust flow over stock. Well represented converters on the performance market with perfect price/quality ratio.  - Read more about GESI

HJS HD 200cpsi Ultra High-Performance catalytic converters (120/130mm). Made in Germany. No CEL issues, no ECU tuning required. The most reputed converters for their outstanding characteristics, quality and durability. EURO6 Compliant. >> Read more about HJS cats.

Double-layer heat shielding 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. As we all know, these engine bays can run extremely HOT. 

* 100 cel Motorsport HJS cat is heat shielded version (120/130mm available)

Main Features:

Significant power gain

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 1.6mm wall 304 stainless steel

OEM-spec V-band flanges

All brackets and mounts as on OEM unit

Cat Gaskets MUST be replaced 

Why we chose Redstar vs anyone else?

They manufacturer and all the products 100% handmade in Russia - Ukrainian owned and operated. Not just another relabeled China/Taiwan product.

They 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. 

Notes:

Removing of factory catalytic converters will NOT trigger a сheck engine light. 

OFF ROAD/MOTORSPORT USE ONLY!

This product is not designed to meet any emissions 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. * 200 cel HJS Catalytic converters are EURO6 compliant.