{"product_id":"rvng-designed-4-true-single-valved-exhaust-system-f80-m3-f82-m4","title":"F80 M3\/F82 M4 Valved Exhaust – 4” Single System by RVNG","description":"\u003cp\u003eRVNG's 4\" Full True Single Midpipe Quad-Tip Valved Exhaust is the first of its kind for the F8X S55 platform — a ground-up redesign of sound, flow, and performance. This isn't just a bigger pipe: the 4\" true single midpipe eliminates the restrictive factory dual-pipe and the 3.5\" crossover designs found in other systems, allowing smooth, uninterrupted flow from the downpipes all the way to the rear muffler. The result is a deeper, more refined tone with less rasp, reduced back-pressure, and better turbo efficiency, especially at higher RPM.\u003c\/p\u003e\u003cp\u003eAn OEM-style electronic valve lets you switch from a quiet, neighborhood-friendly tone to a raw, aggressive one at the press of a button, all flowing out through a striking quad-tip. The full system bolts in within about 30 minutes, replacing the outdated 3.5\" midpipe and OEM muffler.\u003c\/p\u003e\u003ch3\u003eHighlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFirst 4\" full true single midpipe quad-tip valved exhaust for the F8X S55\u003c\/li\u003e\n\u003cli\u003eEliminates the factory dual-pipe and 3.5\" crossover for smoother flow\u003c\/li\u003e\n\u003cli\u003eDeeper, more refined tone with less rasp and reduced back-pressure\u003c\/li\u003e\n\u003cli\u003eOEM-style electronic valve control\u003c\/li\u003e\n\u003cli\u003eQuad-tip configuration\u003c\/li\u003e\n\u003cli\u003eRoughly 30-minute bolt-on install\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eBMW F80 M3 and F82 M4 (S55).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEmissions disclaimer:\u003c\/strong\u003e This product is intended for off-road, race, or closed-course competition use only and is not legal for use on pollution-controlled vehicles operated on public roads in most states and provinces. You are responsible for compliance with all applicable emissions laws. Please check your local laws before purchase and installation.\u003c\/p\u003e\u003cp\u003eShips from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email \u003ca href=\"mailto:support@korespeed.com\"\u003esupport@korespeed.com\u003c\/a\u003e.\u003c\/p\u003e","brand":"Rvng RaceWorks","offers":[{"title":"SS304 Stainless \/ Silver","offer_id":51581099999288,"sku":null,"price":2999.99,"currency_code":"USD","in_stock":true},{"title":"SS304 Stainless \/ Cerakote Ceramic Black","offer_id":51581100032056,"sku":null,"price":2999.99,"currency_code":"USD","in_stock":true},{"title":"SS304 Stainless \/ Gloss Black","offer_id":51581100064824,"sku":null,"price":2999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1775\/7947\/files\/BDF5386E-368A-40B1-B7AF-88CE97BEC943.jpg?v=1766042439","url":"https:\/\/korespeed.com\/products\/rvng-designed-4-true-single-valved-exhaust-system-f80-m3-f82-m4","provider":"KORE SPEED","version":"1.0","type":"link"}