Experience noticeable power gains, an awesome sound, and aggressive yet discrete styling. Manufactured since 1983 in the UK from premium T304L aircraft-grade stainless steel, chosen for its superior quality and anti-magnetic properties, every system ensures ultimate performance and a sharper throttle response through features like mandrel-bent, full-flow pipework.
Milltek’s performance stainless steel exhausts offer genuine power gains, an exhilarating sound, and a significant improvement in driveability and throttle response.
Key Features & Advantages:
- Premium Material: Manufactured from anti-magnetic, non-discoloring Type T304L aircraft-grade stainless steel for superior quality throughout all pipework and silencers.
- Optimised Flow: Increased bore size and mandrel-bent, full-flow pipework ensure ultimate performance without sacrificing mid-range torque.
- Proven Expertise: Over 40 years of continuous development, with all systems designed, developed, and manufactured in the UK since 1983.
- Weight Saving: Substantial weight reduction over original equipment.
- Comprehensive Range: Systems include cat-back, GPF/OPF-back, sports cats, de-cats, and more.
Need fitting guidance for your exhaust system, call +44 (0)1789 774444 or contact us directly.
Find your next BMW 3 Series G80/G81 M3 & M3 Competition S58 3.0 Turbo (OPF/GPF Equipped Cars Only) inc Touring & XDrive Models Exhaust System
| SKU | Product Type | Tip Style | Additional Options | Notes | Pipe MM | Pipe Inches | EC Approved | Race System |
|---|---|---|---|---|---|---|---|---|
| MILLTEK1204-A | Large-bore Downpipes and Cat Bypass Pipes | Decat Downpipes (Requires Stage 2 ECU Remap) – Fits to OE or Milltek 102mm Mid Pipes | 76.2 | 3.0 | X | Y | ||
| MILLTEK1204-B | Large-bore Downpipe and De-cat | Requires Stage 2 ECU Remap – Fits to OE and Milltek Sport 3" GPF Delete Systems | 76.2 | 3.0 | X | Y | ||
| MILLTEK1204-C | HJS Tuning ECE Downpipes | ECE Approved | 70.0 | 2.76 | Y | X | ||
| MILLTEK1204-D | GPF/OPF Bypass | OPF/GPF Bypass – Non-Resonated (Louder) (OE Downpipes & Milltek Sport Axle Back System Only) | Fits to OE Downpipes & Milltek Sport Axle Back System Only – Requires Stage 2 ECU Remap or OPF/GPF Bypass Module (Available from www.leib-engineering.de) | 76.2 | 3.0 | X | Y | |
| MILLTEK1204-E | GPF/OPF Bypass | OPF/GPF Bypass – Non-Resonated (Louder) (OE Downpipes & OE Axle Back System Only) | Fits to OE Downpipes & OE Axle Back System Only (OE Requires Cutting) – Requires Stage 2 ECU Remap or OPF/GPF Bypass Module (Available from www.leib-engineering.de) | 76.2 | 3.0 | X | Y | |
| MILLTEK1204-F | GPF/OPF Bypass | OPF/GPF Bypass – Resonated (OE Downpipes & Milltek Sport Axle Back System Only) | Fits to OE Downpipes & Milltek Sport Axle Back System Only – Requires Stage 2 ECU Remap or OPF/GPF Bypass Module (Available from www.leib-engineering.de) | 76.2 | 3.0 | X | Y | |
| MILLTEK1204-G | GPF/OPF Bypass | OPF/GPF Bypass – Resonated (OE Downpipes & OE Axel Back System Only) | Fits to OE Downpipes & OE Axel Back System Only (OE Requires Cutting) – Requires Stage 2 ECU Remap or OPF/GPF Bypass Module (Available from www.leib-engineering.de) | 76.2 | 3.0 | X | Y | |
| MILLTEK1204-H | GPF/OPF Bypass | OPF/GPF Bypass Single Pipe 102mm (Non Resonated to Milltek Axle Back Only) | Non Resonated to Milltek Axle Back Only – Requires Stage 2 ECU Remap or OPF/GPF Bypass Module (Available from www.leib-engineering.de) Fitment with OE downpipes or Milltek SSXBM1334 / 1333 | 101.6 | 4.0 | X | Y | |
| MILLTEK1204-I | GPF/OPF Bypass | OPF/GPF Bypass Single Pipe 102mm (Non Resonated to OE Axle Back Only) | Non Resonated to OE Axle Back Only – Requires Stage 2 ECU Remap or OPF/GPF Bypass Module (Available from www.leib-engineering.de) Fitment with OE downpipes or Milltek SSXBM1334 / 1333 | 101.6 | 4.0 | X | Y | |
| MILLTEK1204-J | GPF/OPF Bypass | OPF/GPF Bypass Single Pipe 102mm (X Pipe to Milltek Axle Back Only) | X Pipe to Milltek Axle Back Only – Requires Stage 2 ECU Remap or OPF/GPF Bypass Module (Available from www.leib-engineering.de) Fitment with OE downpipes or Milltek SSXBM1334 / 1333 | 101.6 | 4.0 | X | Y | |
| MILLTEK1204-K | GPF/OPF Bypass | OPF/GPF Bypass Single Pipe 102mm (X Pipe to OE Axle Back Only) | X Pipe to OE Axle Back Only – Requires Stage 2 ECU Remap or OPF/GPF Bypass Module (Available from www.leib-engineering.de) Fitment with OE downpipes or Milltek SSXBM1334 / 1333 | 101.6 | 4.0 | X | Y | |
| MILLTEK1204-L | Large Bore Downpipe and Hi-Flow Sports Cat | V2 HJS HQ 200 Cell Catted Downpipes (No CEL) – Fits to OE or Milltek 102mm Mid Pipes | 76.2 | 3.0 | X | Y | ||
| MILLTEK1204-M | Large Bore Downpipe and Hi-Flow Sports Cat | with HJS HQ 200CPSI Cats (No CEL or ECU Software Required) – Fits to OE OPF/GPF & Milltek Sport 3" OPF/GPF Bypass Sections | 76.2 | 3.0 | X | Y | ||
| MILLTEK1204-N | Particulate Filter-back | 115 GT | OPF/GPF Back with Centre Resonator Bypass System with GT-115 Brushed Titanium Trims (OE Requires Cutting) | 80.0 | 3.15 | X | X | |
| MILLTEK1204-O | Particulate Filter-back | 115 GT | OPF/GPF Back with Centre Resonator Bypass System with GT-115 Burnt/Blue Titanium Trims (OE Requires Cutting) | 80.0 | 3.15 | X | X | |
| MILLTEK1204-P | Particulate Filter-back | 115 GT | OPF/GPF Back with Centre Resonator Bypass System with GT-115 Cerakote Black Trims (OE Requires Cutting) | 80.0 | 3.15 | X | X | |
| MILLTEK1204-Q | Particulate Filter-back | 115 GT | OPF/GPF Back with Centre Resonator Bypass System with GT-115 Polished Trims (OE Requires Cutting) | 80.0 | 3.15 | X | X | |
| MILLTEK1204-R | Particulate Filter-back | 115 JET | OPF/GPF Back with Centre Resonator Bypass System with JET-115 Carbon Fibre Trims (OE Requires Cutting) | 80.0 | 3.15 | X | X | |
| MILLTEK1204-S | Axle Back | 115 GT | Axle Back System with GT-115 Brushed Titanium Trims – ECE Approved (OE Requires Cutting) | 80.0 | 3.15 | Y | X | |
| MILLTEK1204-T | Axle Back | 115 GT | Axle Back System with GT-115 Burnt Titanium Trims – ECE Approved (OE Requires Cutting) | 80.0 | 3.15 | Y | X | |
| MILLTEK1204-U | Axle Back | 115 GT | Axle Back System with GT-115 Cerakote Black Trims – ECE Approved (OE Requires Cutting) | 80.0 | 3.15 | Y | X | |
| MILLTEK1204-V | Axle Back | 115 GT | Axle Back System with GT-115 Polished Trims – ECE Approved (OE Requires Cutting) | 80.0 | 3.15 | Y | X | |
| MILLTEK1204-W | Axle Back | 115 JET | Axle Back System with JET-115 Carbon Trims – ECE Approved (OE Requires Cutting) | 80.0 | 3.15 | Y | X | |
| MILLTEK1204-X | Active Valve Control | Plug & Play Remote Control System for OE & Milltek Sport Exhausts | X | X |
