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

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

Hand-built by Brill-Steel in Italy, tuned and validated by S4T. Every system is bespoke — no catalog, no part numbers, just a custom exhaust built for your car.

BESPOKE EXHAUST FABRICATION●VALVED SYSTEMS●RACE HEADERS●DYNO-VALIDATED●SERIAL-NUMBERED●BRILL-STEEL × S4T●ONE CAR. ONE SYSTEM.●BESPOKE EXHAUSTS●BESPOKE EXHAUST FABRICATION●VALVED SYSTEMS●RACE HEADERS●DYNO-VALIDATED●SERIAL-NUMBERED●BRILL-STEEL × S4T●ONE CAR. ONE SYSTEM.●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 — no music, 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 — we'll match the sound.

48-hr response · custom build sheet

Step 1 / Pick make

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 — handmade Italian exhaust systems designed and manufactured 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 with fitment guidance, installation support, calibration, and dyno validation.

01 · Italy

Hand-built fabrication

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

02 · Texas

Calibration & validation

Professional installation, ECU recalibration, full dyno sweep on our Mainline, backpressure testing, sound profiling.

§ 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. Every reel is running a Brill-Steel system built through this program.

Porsche GT3 RS — Customer Calls Full Brillsteel Exhaust

Lamborghini — Aventador SVJ Good Morning Exhaust

Porsche GT3 RS — Long Live Brillsteel Exhaust

Ferrari 296 — I Present to You the Ferrari 296 Speciale w// Full

Ferrari 296 — 296 Speciale Aperta Full Send

Porsche 992 Turbo S — If your Turbo S doesn’t sound like this lower your voice when speakin

Ferrari SP3 Daytona — What color is your SP3 Ferrari SP3 Daytona w/ full exhaust mixed with

Ferrari SP3 Daytona — L T Spotted In Monaco With His Ferrari SP3 Daytona

Lamborghini Aventador — Warning We Are Coming For Everyone 6 to 1 Race

Lamborghini Aventador — This System Is Officially Sold to Congratulations Message to Join

Lamborghini Temerario — Temerario Rev + Pull I Present to You Lamborghini Temerario

Ferrari Testarossa — Pov You Just Ordered the Finest Exhaust On the Planet

Ferrari — 849 Testarossa Full Brillsteel Exhaust

Ferrari 296 — the Ferrari 296 Speciale Finally Unleashed w// Full Exhaust Designed

Porsche GT3 RS — How Does She Sound Watch the Full Episode On Youtube

Ferrari 488 — Go Electric They Said Naaa Forza Ferrari

Ferrari 812 Competizione — V12 screamin . Ferrari 812 Competizione w/ full exhaust

Ferrari SP3 Daytona — Some People Display Them Smokes Them Ferrari SP3 Daytona w//

Porsche GT3 RS — Violently Good Watch the Full Episode On Youtube Link In

Ferrari SP3 Daytona — For President Ferrari La Ferrari Equipped w// Full Exhaust Designed

Ferrari 812 — Properly Driven 812 Competizione

Porsche 992 Turbo S — I present to you the best sounding 992 Turbo S exhaust by BUILT Motor

Ferrari 296 — This Is How a 296 Speciale Aperta Should Be Driven

Porsche 992 Turbo S — The best sounding 992 Turbo S Exhaust System in the World by MADE TO

Ferrari 296 — Craziest 296 Speciale Exhaust Now Available

Ferrari Monza — Enzo Would Be Proud With This One Ferrari Monza Sp2

Porsche GT3 RS — Guess Which One Is Tuned Stage 2 Porsche 992 GT3

Ferrari 296 — Which One Sounds Better 296 Gtb Or 488 Pista Both

Ferrari SP3 Daytona — the Loudest SP3 I Ve Ever Heard

Ferrari 488 Pista — Ciao STAGE 2 Ferrari 488 Pista w/ ECU Calibration + Map-Switching + f

Ferrari SP3 Daytona — Working Through Some Videos From the Other Day the Smoke

Ferrari 812 — the Most Brutal 812 Competizione w// Full Exhaust and Secret

Ferrari 488 — Been Moving Different Lately Stage 2 Ferrari 488 Pista w//

Porsche GT3 RS — All the Smiles Full Episode Drops Today On Youtube Link

Ferrari 296 — Making the Ferrari 296 Speciale Aperta Sound Great Again w//

Ferrari 296 — the Best Ferrari 296 Speciale Exhaust Setup In the World

Ferrari 296 GTB — 296 OWNERS You’re welcome. Ferrari 296 GTB w/ full exhaust + Sport Ca

Lamborghini Huracan EVO — Let there be flames Huracan EVO ECU + TCU + MAP-Switching w/ HEADERS

Ferrari — SF90 Before/After Race Downpipes + Flames

Porsche GT3 RS — the Complete Package For Your GT3 RS Is a Message

Your build

Your car could be the next recording.

Tell us what you drive and the sound you're after. We'll come back with a custom build sheet.

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 installed through the closest Stage 4 Tuning dealer.

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

What power gains can I expect?

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Power gains depend on the platform and setup. A properly designed custom exhaust can improve flow, reduce weight, and support stronger overall performance, with typical gains often in the +12 to +28 hp range.

05

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'll come back with a build sheet, sound samples, and next-step guidance within 48 hours.
No catalog. No compromise.

Visit the workshop

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