{"product_id":"milltek-seconday-cat-delete-bmw-f8x-m3-m4","title":"Milltek Seconday Cat Delete - BMW F8X M3\/M4","description":"\u003cp data-start=\"531\" data-end=\"1010\"\u003eThe Milltek Sport Secondary Catalyst Bypass is designed to maximize exhaust flow, power delivery and sound on F8X generation M3 and M4 models. By removing the factory-installed secondary catalysts (while leaving the primary catalysts in place), the system provides a significant improvement in airflow and sound permeability – resulting in a wider, deeper and more aggressive sound profile that is ideal for track and performance-oriented use.\u003c\/p\u003e\n\u003cp data-start=\"1012\" data-end=\"1154\"\u003e This upgrade is especially popular with F8X enthusiasts who want more sound and dynamics without the need to change the entire exhaust system.\u003c\/p\u003e\n\u003ch2 data-start=\"1161\" data-end=\"1213\"\u003e \u003cstrong data-start=\"1164\" data-end=\"1213\"\u003eBetter flow and more intense sound\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"1215\" data-end=\"1251\"\u003e Secondary Catalyst Bypass Solution: \u003c\/p\u003e\n\u003cul data-start=\"1253\" data-end=\"1531\"\u003e\n\n\u003cli data-start=\"1253\" data-end=\"1316\"\u003e\n\n\u003cp data-start=\"1255\" data-end=\"1316\"\u003e Improves exhaust gas flow rate and reduces back pressure \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1317\" data-end=\"1385\"\u003e\n\n\u003cp data-start=\"1319\" data-end=\"1385\"\u003e Deepens the sound and increases the transparency of engine tones \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1386\" data-end=\"1445\"\u003e\n\n\u003cp data-start=\"1388\" data-end=\"1445\"\u003e Provides an aggressive, motorsport-style exhaust note \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1446\" data-end=\"1531\"\u003e\n\n\u003cp data-start=\"1448\" data-end=\"1531\"\u003e Retains optional compatibility with the original Cat Back system\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"1533\" data-end=\"1670\"\u003e The S55 engine's familiar metallic high-rev sound comes through cleaner and stronger than before, especially during sporty driving.\u003c\/p\u003e\n\u003ch2 data-start=\"1677\" data-end=\"1733\"\u003e \u003cstrong data-start=\"1680\" data-end=\"1733\"\u003eBolt-on installation to original mounting points\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"1735\" data-end=\"1767\"\u003e Milltek's design ensures: \u003c\/p\u003e\n\u003cul data-start=\"1769\" data-end=\"1946\"\u003e\n\n\u003cli data-start=\"1769\" data-end=\"1825\"\u003e\n\n\u003cp data-start=\"1771\" data-end=\"1825\"\u003e direct compatibility with the factory exhaust system \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1826\" data-end=\"1887\"\u003e\n\n\u003cp data-start=\"1828\" data-end=\"1887\"\u003e bolting without welding or structural changes \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1888\" data-end=\"1946\"\u003e\n\n\u003cp data-start=\"1890\" data-end=\"1946\"\u003e precise fit and high-quality finish\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"1948\" data-end=\"2044\"\u003e Bypass tubes integrate seamlessly with either the standard or Milltek Cat Back system.\u003c\/p\u003e\n\u003ch2 data-start=\"2051\" data-end=\"2087\"\u003e \u003cstrong data-start=\"2054\" data-end=\"2087\"\u003e304L grade stainless steel\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"2089\" data-end=\"2159\"\u003e Milltek's \u003cstrong data-start=\"2108\" data-end=\"2131\"\u003e304L Aircraft Grade\u003c\/strong\u003e stainless steel offers: \u003c\/p\u003e\n\u003cul data-start=\"2161\" data-end=\"2304\"\u003e\n\n\u003cli data-start=\"2161\" data-end=\"2189\"\u003e\n\n\u003cp data-start=\"2163\" data-end=\"2189\"\u003e excellent heat resistance \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2190\" data-end=\"2238\"\u003e\n\n\u003cp data-start=\"2192\" data-end=\"2238\"\u003e long service life even under high thermal loads \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2239\" data-end=\"2268\"\u003e\n\n\u003cp data-start=\"2241\" data-end=\"2268\"\u003e high-quality TIG welding \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2269\" data-end=\"2304\"\u003e\n\n\u003cp data-start=\"2271\" data-end=\"2304\"\u003e flow-optimized internal structure\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"2306\" data-end=\"2386\"\u003e Pipes made from this material can withstand even the most demanding operating conditions.\u003c\/p\u003e\n\u003ch2 data-start=\"2393\" data-end=\"2438\"\u003e \u003cstrong data-start=\"2396\" data-end=\"2436\"\u003eCompatibility: BMW F8X M3\/M4 (non-OPF\/GPF)\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"2439\" data-end=\"2530\"\u003e This secondary catalytic converter bypass kit fits the following 2014-2018 models: \u003c\/p\u003e\n\u003cul data-start=\"2532\" data-end=\"2672\"\u003e\n\n\u003cli data-start=\"2532\" data-end=\"2550\"\u003e\n\n\u003cp data-start=\"2534\" data-end=\"2550\"\u003e BMW \u003cstrong data-start=\"2538\" data-end=\"2548\"\u003eM3 F80\u003c\/strong\u003e \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2551\" data-end=\"2581\"\u003e\n\n\u003cp data-start=\"2553\" data-end=\"2581\"\u003e BMW \u003cstrong data-start=\"2557\" data-end=\"2579\"\u003eM3 Competition F80\u003c\/strong\u003e \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2582\" data-end=\"2606\"\u003e\n\n\u003cp data-start=\"2584\" data-end=\"2606\"\u003e BMW \u003cstrong data-start=\"2588\" data-end=\"2604\"\u003eM4 Coupe F82\u003c\/strong\u003e \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2607\" data-end=\"2635\"\u003e\n\n\u003cp data-start=\"2609\" data-end=\"2635\"\u003e BMW \u003cstrong data-start=\"2613\" data-end=\"2633\"\u003eM4 Convertible F83\u003c\/strong\u003e \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2636\" data-end=\"2672\"\u003e\n\n\u003cp data-start=\"2638\" data-end=\"2672\"\u003e BMW \u003cstrong data-start=\"2642\" data-end=\"2670\"\u003eM4 Competition (F82\/F83)\u003c\/strong\u003e\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"QT Parts","offers":[{"title":"Without resonator","offer_id":51875318923611,"sku":"MIL-SSXBM1032","price":426.0,"currency_code":"GBP","in_stock":true},{"title":"Resonated","offer_id":51875318956379,"sku":"MIL-SSXBM1144","price":743.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9937\/5126\/files\/SSXBM1032_1_fab4e479-f134-41e9-a2ca-8d4ae74eeb45.png?v=1765357434","url":"https:\/\/www.qtparts.fi\/en-gb\/products\/milltek-seconday-cat-delete-bmw-f8x-m3-m4","provider":"QT Parts","version":"1.0","type":"link"}