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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 |
| Application | BMW X3 M F97 / X4 M F98 S58 LCI, 2022 onwards; non-GPF ROW/North American application |
| Quantity | One exhaust system in the selected configuration |
| Construction | 304L stainless steel |
| Pipe diameter | 80 mm |
| Emissions configuration | Primary catalysts retained; secondary catalysts removed; race product |
| Calibration | Calibration requirements depend on the exact vehicle |
| SKU / part number | SSXBM1262, SSXBM1263, SSXBM1264, SSXBM1265, SSXBM1266 |
A more vocal finish to your LCI M build.
Bring more of the S58's sound into your 2022+ LCI X3 M or X4 M track build. This Milltek primary-cat-back system is for the compatible non-GPF applications, retaining the primary catalysts while replacing the secondary-cat sections and the exhaust behind them. Twin 80 mm pipework, valved rear sections and a choice of tips give you sound and finish to enjoy. This is a motorsport configuration.
| Configuration | SKU |
|---|---|
| Polished Trims | SSXBM1262 |
| Cerakote Black Trims | SSXBM1263 |
| Brushed Titanium Trims | SSXBM1264 |
| Burnt/Blue Titanium Trims | SSXBM1265 |
| Carbon Fibre Trims | SSXBM1266 |
This system replaces the secondary-cat sections as well as the centre and rear exhaust. That is the reason to choose it over a rear-only sound upgrade. The primary catalysts stay fitted, while the secondary catalysts are removed. Match this motorsport configuration to the exact non-GPF car and arrange the calibration advice with fitting.
Choose this for the correct non-GPF LCI application. The LCI GPF-bypass system and the pre-LCI X3 M downpipe-back system have different front sections and should not be chosen solely because they also fit an S58 engine.
MSBM416/417 secondary catalyst bypass pipes, connecting links, centre and rear exhaust sections, valved links, tailpipes, the selected tips and fitting hardware.
This is a motorsport application with secondary catalyst removal. Use a specialist installer and have the calibration requirements assessed for the exact vehicle. Milltek’s fitting estimate is 2-3 hours, with the valve connections and outlet alignment included in the fitting work.
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.
This is for the non-GPF application. It retains the primary catalysts but replaces the secondary catalysts.
The tip material or finish changes; the underlying exhaust configuration stays the same. Brushed and burnt titanium options are titanium tips on a stainless exhaust, while carbon is the tip finish rather than the material of the complete system.
Calibration requirements depend on the exact vehicle. Arrange any required calibration with the installation.
The finish changes the appearance of the tips. It does not change the underlying exhaust configuration shown in the option table.
Let the exhaust cool before cleaning. Wash road salt and dirt from the tips regularly with a soft cloth and a non-abrasive cleaner suitable for their finish. Have any new rattle checked for loose fittings or contact with the bodywork.
No. The primary catalysts remain and the secondary-cat sections are bypassed. This is still a race-use system. It is for the listed non-GPF cars, not a substitute for the GPF-equipped application.
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.
