Alfa9 Supply

Modern & Vintage Alfa Romeo performance, including the 4C, New Giulia, Stelvio, & Classics.

720-900-6395

Welcome to Alfa9 Supply. Our passion is to provide you a unique range of products that will help you tune your Alfa Romeo 4C or Vintage Alfa Romeo.

Whether you have a track car, a canyon carver or a radical daily driver, you can customize it here.

Thanks for visiting. 

Alfaworks 4C Helmholtz system

alfa 4c exhaust helmholtz
Quicksilver 4C usa
USA Quicksilver exhaust
4C helmholz clamps
alfa 4c exhaust helmholtz
Quicksilver 4C usa
USA Quicksilver exhaust
4C helmholz clamps

Alfaworks 4C Helmholtz system

from 645.00

Alfa Romeo 4C Helmholtz Exhaust
This is a custom tuned Alfa 4C exhaust system with Helmholtz resonator. It is a straight through system and uses a resonator and tuned pipe diameters to remove the drone at around 80mph.

The Helmoltz Chamber design is the only proven effective way to kill drone in the 4C. If you want a true sport tuned Euro sound for your 4C and no drone, this is it. It gives the 4C some of that classic Alfa Romeo exhaust note that Alfisti love.

This system also includes carbon tips which can be angled as you want and provide a nice finished look to the back of the Alfa Romeo 4C. The adjustable angles of the tips will help make installation and final fitting easier than systems with pre welded tips.

The system utilizes two different diameter pipes to produce a sound with much more depth than Alfa's race exhaust and at idle it retains a purposeful note where as the standard system can sound flat and unfinished.

Select the optional system without the resonator for max volume and a 5.5 lb. weight savings over the Alfa factory race exhaust.

Weight of the system with resonator is only 3.3 lbs. heavier than Alfa's race system. Easy installation retains the factory exhaust exits, and it's compatible with both the 4C Coupe and Spider. Clamps are included. See the Video.

The fit and finish of this system is superb and what you’d expect for a car of the 4C’s level. 

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Price includes shipping from UK.

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