BMW G80 M3 / Build film
Downpipes, a Z-pipe and a personal sound brief.
Follow the workshop explanation, fabrication and installed pipework behind this bespoke BMW exhaust.
Watch the BMW build
Custom exhausts. Built properly.
Premium bespoke exhaust fabrication and repairs from Birmingham, designed around your car, your sound and the way you drive, wherever in the UK your project begins.
Fabrication
Built around the vehicle
Sound
Planned around your preference
Workshop
Birmingham, by appointment
Choose the right workshop appointment.
Book a 30-minute exhaust assessment, or reserve a dedicated 9am or 2pm complete-install slot.
View live availability Deposit shown at checkout when required
Exhaust work, without compromise.
From focused repairs to complete bespoke systems, every job starts with the vehicle, the driver and the result they want.
Fabricated for the way you drive.
An exhaust is more than a collection of parts. Sound, flow, fitment and finish need to work together. We start by understanding your car and the experience you want from it, then agree the right approach before work begins.
Driven by detail
Considered exhaust work for modern performance cars, cherished classics and individual builds.
About Pi MotorsportMore from the workshop
An exhaust specialist. A working garage too.
DPF and OPF cleaning and diagnosis
Exhaust fabrication is our specialism, but it is not the only work carried out in the workshop. We also assess and clean DPFs on diesel vehicles and OPFs on petrol vehicles, checking the likely cause of a restriction before recommending the right next step.
Explore DPF and OPF cleaningTechnical guidance
Make the right exhaust decision before you book.
Detailed workshop guidance for owners comparing sound, materials, fabrication quality, repair options and specialist travel.
Exhaust Guides · 4 November 2026
Silencer Placement Explained: Controlling Volume, Tone and Drone
Why silencer size and position must be planned together, and how front, centre and rear placement influence sound, clearance and cabin comfort.
Read the guideExhaust Guides · 31 October 2026
How Exhaust Valve Placement Changes Sound and Cabin Comfort
Why a valve near the front, middle or rear of an exhaust changes which components are bypassed, the sound difference, heat exposure and cabin experience.
Read the guideExhaust Guides · 28 October 2026
Can a Valved Exhaust Be Added to an Existing System?
When an exhaust-valve retrofit is feasible, what must be inspected and why valve size, placement, control and the quieter route need planning together.
Read the guideFrom first conversation to final fit.
A straightforward process built around your car, your expectations and a properly agreed result.
- 01
Tell us about the car
Share the vehicle, the current setup and what you want to change.
- 02
Agree the right approach
We will discuss the options and confirm the right next step for the job.
- 03
Fabricate and fit
Your exhaust work is completed around the agreed plan and requirements.
- 04
Final checks and handover
Fitment, finish and the completed work are checked before collection.
Planning a specialist visit
One Birmingham workshop. Projects from across the UK.
If you are travelling for a bespoke exhaust, send the vehicle details, current setup and the result you want before you book. We can discuss the likely scope and the right appointment so the journey is planned around the work.
Plan your workshop visitFrom the workshop.
A closer look at the cars, fabrication and exhaust work passing through Pi Motorsport.
Workshop films & customer builds
See the work. Understand the choices.
SEAT Leon Cupra 290 / Customer build
Two sound settings. One bespoke mid-section.
Exhaust leak repair, two resonators and an electronic valve, with the original rear silencer and tailpipes retained.
Watch the Cupra buildBefore you book.
A few quick answers about custom exhaust fabrication and repair work.
In many cases, yes. We will first inspect the current system, understand what you want to achieve and recommend whether to modify it or fabricate a new section.
Let’s talk about your exhaust.
Tell us about the car, the current setup and what you want to achieve. We’ll recommend the right next step.