{"product_id":"milltek-optional-upgrade-for-existing-axle-back-system-nas-model-only-ssxbm1237","title":"Milltek Optional upgrade for Existing Axle Back System NAS Model Only","description":"\u003cp\u003eAlready 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.\u003c\/p\u003e\u003cp\u003eManufactured 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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e This upgrade is for NAS (North American Spec) M240i G42 Non-OPF\/GPF models only.\u003c\/p\u003e\n\u003cp\u003eDesigned and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.\u003c\/p\u003e\n\u003ch3\u003eVehicle fitment\u003c\/h3\u003e\n\u003cul class=\"fitment-list\"\u003e\n\u003cli\u003e2023 BMW M240i Base\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60150743367966,"sku":"MILSSXBM1237","price":824.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/SSXBM1237_1.jpg?v=1791255261","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-optional-upgrade-for-existing-axle-back-system-nas-model-only-ssxbm1237","provider":"Signature Autohaus","version":"1.0","type":"link"}