{"product_id":"milltek-sport-bmw-m3-m4-f80-f82-f83-equal-length-cat-back-exhaust","title":"Milltek Sport BMW M3\/M4 (F80\/F82\/F83) Equal Length Cat-Back Exhaust","description":"\u003cp dir=\"ltr\"\u003eThe S55's twin-turbo inline-six is genuinely one of BMW's most celebrated engines, and the factory exhaust, while far from bad, leaves real character on the table, tuned as much around noise regulations as outright drama. Milltek Sport's Cat-Back exhaust for the M3\/M4 replaces everything from the catalytic converter rearward, engineered to deliver genuine gains in flow, sound, and weight over the factory system.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eGenuinely notable: this system uses an equal length design, engineered specifically to optimise exhaust pulse timing between cylinders. Where a standard system can leave individual cylinder pulses arriving at slightly uneven intervals, equal length construction ensures each pulse travels the same distance before merging, resulting in a genuinely smoother, more resonant tone and, in many cases, a measurable improvement in scavenging efficiency across the rev range.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eConstructed entirely from T-304 stainless steel, this system is built to outlast the car itself, resisting the corrosion that eventually catches up with mild steel factory systems, especially through wet European winters. Milltek's own sound engineers spend considerable time tuning each system's resonance and tone, striking a genuine balance between a purposeful, sporting character and everyday drivability, avoiding the drone that can plague poorly engineered aftermarket systems on a long motorway drive.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease select your exhaust tip finish at checkout:\u003c\/strong\u003e Polished, Cerakote Black, Brushed Titanium, Burnt Titanium, or Carbon Fibre. All options deliver identical performance and sound characteristics, purely a styling choice.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003eWhy Choose This Equal Length Cat-Back Exhaust\u003c\/h2\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eEqual length design optimises exhaust pulse timing for a smoother, more resonant tone\u003c\/li\u003e\n\u003cli\u003eGenuine gains in flow, sound, and weight over the factory system\u003c\/li\u003e\n\u003cli\u003eT-304 stainless steel construction throughout, built to outlast the factory system\u003c\/li\u003e\n\u003cli\u003eFive distinct tip finish options, from classic polished to carbon fibre\u003c\/li\u003e\n\u003cli\u003eMilltek's own sound engineering, avoiding unwanted drone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003eCompatibility\u003c\/h2\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eBMW M3 (F80)\u003c\/li\u003e\n\u003cli\u003eBMW M4 (F82\/F83)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek Sport","offers":[{"title":"Polished","offer_id":54710266134861,"sku":"SSXBM1146","price":2857.62,"currency_code":"EUR","in_stock":false},{"title":"Cerakote Black","offer_id":54710266167629,"sku":"SSXBM1147","price":3086.57,"currency_code":"EUR","in_stock":false},{"title":"Brushed Titanium","offer_id":54710266200397,"sku":"SSXBM1148","price":3482.61,"currency_code":"EUR","in_stock":false},{"title":"Burnt Titanium","offer_id":54710266233165,"sku":"SSXBM1150","price":3733.84,"currency_code":"EUR","in_stock":false},{"title":"Carbon Fibre","offer_id":54710266265933,"sku":"SSXBM1149","price":3169.49,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/4808\/2253\/files\/Milltek_Sport_BMW_M3_M4_F80_F82_F83_Equal_Length_Cat-Back_Exhaust.webp?v=1789119896","url":"https:\/\/i6tuning.com\/products\/milltek-sport-bmw-m3-m4-f80-f82-f83-equal-length-cat-back-exhaust","provider":"i6 Tuning","version":"1.0","type":"link"}