Milltek Optional upgrade for Existing Axle Back System - NAS Model Only - BMW 2 Series - SSXBM1237
Ships free in the US
Make sure this fits your car
Fits: M240i G42
- Shop tested in Dallas
- Free pickup in Dallas
- Installs at our shop
Already running the BMW G42 M240i NAS axle-back system? Upgrade to a full cat-back without cutting the OE exhaust. This optional upgrade kit converts an existing Milltek Sport axle-back system into a complete Milltek cat-back, unlocking improved flow and a fuller exhaust note from the catalyst rearward.
Manufactured to the same standard as the rest of the Milltek system in T304L stainless steel with mandrel-bent piping. Designed for direct fitment alongside the original axle-back hardware — no permanent modifications to the vehicle or the existing system are required.
Please note: This upgrade is for NAS (North American Spec) M240i G42 Non-OPF/GPF models only.
Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.
Specifications
- Pipe diameter: 76.2mm (3.00")
- Fitting time: 1.5 to 2 hours, including removing the factory system
Fitment
- BMW > 2 Series > M240i Coupe > 2022 to 2023
Listed for these cars. Check the title and description for exact years, body styles and drivetrain.
| Make | Model | Chassis | Years | Fits |
|---|---|---|---|---|
| BMW | M240i | G42 | 2022+ |
Not sure? Call or text 945-954-1142 with your car or VIN.
- Free US shipping on orders over $250.
- Free pickup at our Dallas shop, usually ready within 24 hours.
- Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
- Want it installed? Book the install at thegbmotors.com.
Full details are on our shipping and returns page.
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