Ferrari Monza SP2 quad exhaust by Brill-Steel and Stage 4 Tuning

Tailor-made exhausts.
Built for one car. Yours.

Handmade in Italy by Brill-Steel and supplied worldwide by S4T. Each system is made to order for your car in stainless steel, titanium or inconel, and TIG welded by hand.

BESPOKE EXHAUST FABRICATION●VALVED SYSTEMS●RACE HEADERS●HANDMADE IN ITALY●SERIAL-NUMBERED●BRILL-STEEL × S4T●BESPOKE EXHAUSTS●BESPOKE EXHAUST FABRICATION●VALVED SYSTEMS●RACE HEADERS●HANDMADE IN ITALY●SERIAL-NUMBERED●BRILL-STEEL × S4T●BESPOKE EXHAUSTS●

§ I

The Listening Room · Exhaust Notes

Unedited audio. Recorded on customer cars.

The sound is
the product.

A spec sheet can't play an upshift. Every note below was recorded on a customer car running a full Brill-Steel system, with no music and no sweetening. Press play. This is what leaves the workshop.

Ferrari

Testarossa: stock, then Brill-Steel

Same car, same road. Factory system first, full Brill-Steel second. There is no comparison.

0:00 / 0:23View reel ↗

Tracklist12 recordings · unedited

Recorded on customer carsFull Brill-Steel systems

Heard the one you want? Tell us what you drive and we'll match the sound.

Reply within 48 hours with options and pricing

Brill-Steel

Select your platform.

Choose a Brill-Steel-supported marque to view the exact vehicle list and build options.

§ II

The partnership

Two workshops. One obsession.

Two workshops.
One obsession.

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Milan · Cremona · Austin

Stage 4 Tuning is the exclusive worldwide distributor of Brill-Steel exhausts, designed and handmade in Italy.

Brill-Steel has been building custom exhaust systems for over 30 years, pairing old-world fabrication with modern performance standards. Stage 4 Tuning brings that program to clients worldwide, from choosing the right system for your car to delivery.

01 · Italy

Hand-built fabrication

CAD design, material selection, mandrel bending, TIG welding under argon, heat treatment, laser-etched serialization. Every system signed.

02 · Stage 4 Tuning

Ordering & delivery

We confirm the right system for your car, place the build with Brill-Steel and ship it to you or your installer.

§ III

Field Recordings · The Reels

2.4M+ likes across these recordings.

Shot in the wild. Sound on.

Customer cars caught in the wild: launches, upshifts, cold starts, hillclimbs. 133 recordings across 16 cars, every one running a Brill-Steel system. Pick a car to hear it.

Choose a model

Showing 11 of 133

Ferrari 296 Speciale, Exhaust only, no tune

Ferrari 296 Speciale Aperta, September 2026

Ferrari 12Cilindri Spider, September 2026

Your car

Your car could be the next recording.

Tell us what you drive and the sound you're after. We'll come back with a system specified for your car.

48-hr response

§ IV

Case Files · Private Commissions

Monza SP2 · Daytona SP3, two twelves built by hand.

Ferrari Monza SP2 with butterfly doors raised at sunset in front of Brill-Steel workshop — Ferrari Monza SP2Quad-exit system · −14 kg vs. OEM

Ferrari Daytona SP3 front three-quarter outside the Brill-Steel workshop — Ferrari Daytona SP31 of 599 · fitted to the OEM diffuser

Chrome prancing horse emblem on black Ferrari Monza SP2 rear — Cavallino, chromed042 · i

Ferrari Monza SP2 barchetta on open road at golden hour — Open road · dusk042 · ii

At the workshopSP3 · i

Ferrari Daytona SP3 script on interior carbon trim — Script · carbonSP3 · ii

§ V

Questions

01

How does the exhaust commission process work?

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Each project starts with a consultation to review your vehicle, goals, and preferred sound profile. The system is then designed for the application, fabricated to suit the car, and shipped to you or your installer.

02

What materials are used?

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Our custom exhaust systems are built from premium motorsport-grade materials selected for each vehicle, intended use, and desired balance of weight, durability, and sound.

03

How long does a custom exhaust take?

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Typical lead time is about 4 to 6 weeks. Timing can vary depending on the vehicle, fabrication complexity, and current build schedule.

04

Can you build for Porsche, Ferrari, McLaren, and Lamborghini?

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Yes. We build custom exhaust systems for a range of euro and exotic platforms, including Porsche, Ferrari, McLaren, and Lamborghini.

§ VI

Commission

finis

Your car deserves a
bespoke exhaust.

Tell us what you drive. We reply within 48 hours with options and pricing, plus sound samples and what happens next.

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