Alfa Stelvio Quadrifoglio - Ragazzon cat converter L+R

Ragazzon Stainless Steel Cat-Replacement Pipes (Catless) – Alfa Romeo Giulia / Stelvio Quadrifoglio 2.9 Bi-Turbo
Part number: 50.0839.80

Maximum flow, a rawer sound and razor-sharp throttle response. These Ragazzon cat-replacement pipes replace the original catalytic converters on the 2.9 Bi-Turbo and significantly reduce backpressure, ideal for anyone looking to unleash the full potential of their Quadrifoglio on the track.

Key features

• Catless downpipes for maximum flow and fast spool

• Ø76 mm pipe diameter for high flow and a more aggressive exhaust note

• Stainless steel, Italian craftsmanship and perfect fitment

• Group N version, developed for performance and track use

• Compatibility: Giulia QV and Stelvio QV 2.9 Bi-Turbo, Euro 6–6B engines (up to approx. 08/2018)

Benefits

• Noticeable improvement in throttle response and torque

• More power potential when tuning and more stable EGTs under high load

• Deeper, sportier sound without compromising flow

Installation & important notes

• ECU modification recommended/required to prevent fault codes and optimize performance

• For connection to the original centre section or a Ragazzon centre section, an adapter may be required; this must be ordered separately

• Primarily intended for track use; check local laws and regulations for road use

H&S Corse advice
Combine this set with our custom-written ECU software and a high-quality centre section or full exhaust system for the best results. We are happy to help you determine the right setup for your goals, from track days to high-performance road cars.