{"product_id":"aa-downpipe-s55","title":"Active Autowerke Downpipes w\/ GESI Cats — S55","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke GESI-catted downpipes for the S55 — F80 M3, F82\/F83 M4, F87 M2 Competition.\u003c\/strong\u003e Clears the factory restriction on both turbos while keeping high-flow cats in the pipes.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eHand-built 304 stainless, TIG-welded, with a casted upper V-band for precise fitment and a pair of 4\" GESI G-Sport High Output (Gen 2) catalytic converters — rated for 500–850 hp, EPA-registered, 49-state \/ OBD2, no CEL. Not California-legal.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eDownpipe-side core of an S55 Stage 2 build; we tune around it. The \u003ca href=\"\/products\/stage-2-kit-s55\"\u003eStage 2 Kit — S55\u003c\/a\u003e bundles parts + calibration for 8% under à la carte.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S55 — F80 M3, F82 M4, F83 M4 Convertible, F87 M2 Competition. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted (GESI)","offer_id":43280704241725,"sku":"11-080","price":3515.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/aa-downpipe-s55-gesi-01.webp?v=1781743119","url":"https:\/\/essewerks.com\/products\/aa-downpipe-s55","provider":"Esse Werks","version":"1.0","type":"link"}