Custom Exhaust Systems and Performance Exhaust Upgrades

Custom Exhaust Systems and Exhaust Upgrades

Transform your vehicle’s sound, performance, and character with our custom exhaust systems and performance exhaust upgrades at our Langley, Slough workshop. Whether you want a deep, aggressive exhaust note, improved power and torque, or a lightweight, free-flowing system, we design and install exhausts to match your exact needs and driving style.

A standard factory exhaust can restrict airflow and mute engine sound. Our custom-built systems are engineered for maximum performance and efficiency, using mandrel-bent piping, high-flow catalytic converters, and performance silencers to optimise exhaust flow. From cat-back and turbo-back systems to valved exhausts that let you control sound levels, we provide solutions for daily drivers, track cars, and high-end supercars.

Our expert technicians ensure precise fitment, quality welds, and perfect alignment, using premium-grade stainless steel or titanium for durability and corrosion resistance. We also work with leading performance exhaust brands including Akrapovič, Milltek Sport, Armytrix, Capristo, and Remus, or create fully bespoke systems in-house for a one-of-a-kind result.

Why Choose Onyx Performance?

As Seen on Carwow

We’ve been proudly featured on Carwow – a testament to the quality, professionalism, and performance-focused results that set us apart. Watch our feature here to see us in action.

Expertise You Can Trust

With years of experience and deep technical knowledge, our team understands performance vehicles inside and out – from custom remaps to high-end servicing.

Advanced Workshop & Tools

We operate from a state-of-the-art facility in Slough, equipped with cutting-edge diagnostics, dyno testing, and industry-leading tools for accurate, high-quality work.

Tailored Solutions for Every Vehicle

We don’t believe in one-size-fits-all. Every car gets a bespoke approach, ensuring the best results whether it’s a remap, upgrade, or routine service.

Trusted Nationwide

Performance enthusiasts from across the UK come to Onyx because they know they’ll receive premium-quality workmanship, careful attention to detail, and honest advice.

Complete Care, All in One Place

From tuning and servicing to tyres, trackers, and immobilisers – we offer a full suite of services under one roof, all with a strong focus on safety, reliability, and top-tier customer support.

Customer Reviews

Book Your Custom Exhaust Installation in Slough

Enhance your car’s sound, style, and performance with a custom-built or premium performance exhaust system from our Langley, Slough specialists. From discreet upgrades to race-inspired systems, we deliver precision craftsmanship and exceptional results. Call today to discuss your build.

5-Star Google Reviews

0 +

Years of Experience

0 +

Customer Satisfaction

0 %

Why Choose Onyx Performance for Servicing?

Experts in Performance Cars

We know how to properly care for performance, modified, and luxury vehicles. Our team has the skills and experience to handle specialist requirements confidently.

Correct Service Schedules

Every service follows the exact schedule recommended by your vehicle’s manufacturer, helping maintain performance and protect your warranty.

Quality or OEM Parts

We only use high-quality aftermarket or original manufacturer parts, ensuring long-lasting reliability and top-level performance.

Full Vehicle Inspection

Our service goes beyond just changing oil. We inspect all key systems to keep your car safe, smooth, and road-ready.

Honest Advice, No Surprises

With transparent pricing and expert recommendations, you’ll always know what your car needs – no upselling, no hidden fees.

Fast, Trusted & Tracked

We offer quick turnaround, maintain service records, and send reminders – that’s why customers travel to us from across the UK.

Frequently Asked Questions

What’s the difference between a cat-back and a turbo-back exhaust?

A cat-back system replaces everything from the catalytic converter back, while a turbo-back replaces the exhaust from the turbocharger outlet, allowing for greater performance gains.

Will a performance exhaust make my car louder?

Yes – but we can tailor the volume and tone to suit your preference, including quiet cruising modes with valved systems.

Do you offer stainless steel and titanium options?

Yes – stainless steel is ideal for long-term durability, while titanium offers extreme weight savings and unique sound characteristics.

Can a new exhaust improve performance?

Absolutely – a less restrictive exhaust improves exhaust gas flow, increasing horsepower, torque, and throttle response.

Are performance exhausts road legal?

Yes – we ensure our exhaust systems comply with UK road noise and emissions regulations, unless specifically built for off-road or track use.

Do you work with specific brands?

We supply and fit exhausts from Akrapovič, Milltek, Armytrix, Capristo, Remus, and also fabricate bespoke systems in-house.

Get a quick quote

Drop us a line! or Message us on WhatsApp

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.