Available to Order
Not sure which one? Ask us to confirm fitment first →For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. Outside the UK, shipping is shown at checkout and local customs and taxes remain your responsibility.
Some products are made to order, imported or custom built. If timing matters, contact us before ordering and we will confirm the expected delivery timeframe.
We confirm build spec, lead time and delivery arrangements with you before any money moves. Prefer to talk it through first?
| Specification | Details |
|---|---|
| Brand | Milltek Sport |
| System | GPF-back with valved rear silencer bypass |
| Application | GPF-equipped BMW M8 / M8 Competition 4.4 V8: F91 Cabriolet and F92 Coupe 2020+; F93 Gran Coupe LCI 2021+ |
| Main pipe diameter | 80 mm |
| Main pipework material | 304L stainless steel |
| Configuration | See the complete option table |
| E-mark approval | No |
Hear more of the M8's V8 without losing its GPFs.
This 80 mm Milltek system brings the twin-turbo V8 further into the driving experience with valved rear silencer bypass hardware and a choice of five 115 mm tailpipe finishes. It replaces the exhaust behind the factory particulate filters on the specified M8 and M8 Competition models. From polished tips to carbon, it also gives the rear of the car a finish to match the way you want it to look.
The bypass layout changes the exhaust downstream of the GPFs, where it can make the V8 more audible without replacing the emissions filters. All five options use that same layout; brushed or burnt titanium and carbon tips change the finishing detail, not the pipe diameter.
Each row is one complete system. Select the matching option and part number when ordering.
| Version | SKU | Price | E-mark approval |
|---|---|---|---|
| valved Rear Silencer Bypass & GT-115 Polished Trims | SSXBM1185 | GBP 3,162.13 | No |
| valved Rear Silencer Bypass & GT-115 Cerakote Black Trims | SSXBM1186 | GBP 3,483.78 | No |
| valved Rear Silencer Bypass & GT-115 Brushed Titanium Trims | SSXBM1187 | GBP 3,749.84 | No |
| valved Rear Silencer Bypass & GT-115 Burnt/Blue Titanium Trims | SSXBM1188 | GBP 3,890.20 | No |
| valved Rear Silencer Bypass & JET-115 Carbon Trims | SSXBM1189 | GBP 3,815.22 | No |
OE-system adapters, front and rear connecting pipes, left and right valve assemblies, outlet pipes, the selected 115 mm trims and fitting kit.
GPF-equipped BMW M8 / M8 Competition 4.4 V8: F91 Cabriolet and F92 Coupe 2020+; F93 Gran Coupe LCI 2021+
For the GPF-equipped M8 applications above. It is not an M850i exhaust. Allow roughly 2-3 hours for installation, including removal of the original system. Installation requires cutting the original exhaust. The kit connects behind the GPFs and includes adapters for the original exhaust. A professional installation gives the pipework, tip alignment and hot clearances the attention they need. The system should be checked again after its first heat cycle.
Clean the tailpipes regularly once they are cool, so road dirt and deposits do not become a bigger job later. Use care products suited to the chosen finish; metal polish intended for bare stainless is not a general treatment for coated or carbon tips.
For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. For customers outside the UK, local customs and taxes remain your responsibility, and shipping is shown at checkout. If a shipping option is not available, email us and we will prepare a tailored quote.
Many of the products we sell are made to order, imported or custom built, so a lead time may apply. If you need a part urgently, contact us before ordering and we will confirm the expected delivery timeframe and process.
Yes. This system fits downstream of the factory petrol particulate filters and retains them. It is the exhaust behind the filters that changes.
No remap is required for this GPF-back change with the rest of the exhaust in its standard configuration. Different requirements can apply if you also change downpipes or catalysts.
The silencer and pipe configuration determine the sound. Pick the finish for the look you want: changing the decorative tips within the same system layout is an appearance choice.
Milltek covers parts containing valves for 2 years or 80,000 km and electronic products for 2 years. Other qualifying parts in this system have lifetime cover. Cover is for the original purchaser and excludes fitting labour and failures caused by misuse or unauthorised modification. Keep your invoice and contact us if you need help with a claim.
Model year, engine, drivetrain, hardware and existing modifications can all change what fits. Check the applications and supplier notes above, or send us your exact vehicle and setup before ordering.
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.
