{"product_id":"dinan-15-20-bmw-m3-m4-f80-f82-f83-free-flow-axleback-exhaust-system-black-tips","title":"Dinan 15-20 BMW M3\/M4 (F80\/F82\/F83) Free Flow Axleback Exhaust System - Black Tips","description":"Dinan's Free Flow axle-back exhaust system features 100% stainless steel construction measured to exact specifications to ensure proper fit via factory hangers and mounting points. Dyno tuned for maximum exhaust flow with minimum backpressure, this system is designed to provide a more aggressive sound under acceleration, while reducing drone inside the vehicle, thanks to computer-controlled valves that limit noise during low-speed driving and open fully during high-load conditions to allow free flow. The exhaust gasses exit through larger laser engraved polished, or ceramic black, quad tips.\nStainless Steel - Polished Tips - F80\/F82\/F83\n\u003cul\u003e\n  \u003cli\u003eComputer controlled valve limits noise during low speed driving; valve opens fully during high-load conditions to allow free flow\u003c\/li\u003e\n  \u003cli\u003eTwin secondary exhaust valves with a whopping 76mm diameter, making them 45% less restrictive than the OE valves.\u003c\/li\u003e\n  \u003cli\u003eOperation of exhaust valve is unchanged so exhaust tone can be adjusted via the M-Drive settings.\u003c\/li\u003e\n  \u003cli\u003eQuad 3.5\" black ceramic coated, or polished stainless, laser engraved exhaust tips\u003c\/li\u003e\n  \u003cli\u003eUses the factory brackets and hangers for a factory-like fitment\u003c\/li\u003e\n  \u003cli\u003eDrone abatement technologies used to reduce cabin resonance\u003c\/li\u003e\n  \u003cli\u003eDinan exhaust is 3 lbs lighter than stock\u003c\/li\u003e\n  \u003cli\u003eStock exhaust valve actuaters are reused\u003c\/li\u003e\n  \u003cli\u003e100% 304 stainless steel construction\u003c\/li\u003e\n  \u003cli\u003eEnjoyably louder, sporter sound\u003c\/li\u003e\n  \u003cli\u003eMore Power: +5 HP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEnhance your BMW M3 or M4 with the Dinan 15-20 BMW M3\/M4 F80\/F82\/F83 Free Flow Axle-Back Exhaust System, crafted from 100% stainless steel for durability and optimal performance. Designed with factory-fit precision using factory brackets and hangers, this system ensures a seamless installation experience. The exhaust features larger twin secondary valves with a 76mm diameter, which are 45% less restrictive than stock valves, promoting maximum exhaust flow and increased horsepower. Dyno-tuned to deliver an aggressive yet refined sound, it amplifies the engine's tone during acceleration while minimizing drone inside the cabin through advanced computer-controlled valves that limit noise at low speeds and open fully during high-load conditions.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eConstructed from 100% 304 stainless steel for corrosion resistance and longevity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComputer-controlled exhaust valves regulate noise during low-speed driving and open fully for high-load conditions\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTwin secondary valves with a 76mm diameter, reducing restriction by 45% compared to OEM valves\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuad 3.5-inch laser-engraved tips available in polished stainless or black ceramic coating for a sleek appearance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFactory brackets and hangers used for a precise, factory-like fitment\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdvanced drone abatement technology reduces cabin resonance for a quieter interior experience\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eLighter weight at approximately 3 pounds less than stock exhaust for improved vehicle responsiveness\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eReuse of stock exhaust valve actuators maintains original operation and ease of control\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBoosts engine performance by adding approximately 5 horsepower\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with 2015-2020 BMW M3 and M4 models, including F80, F82, and F83 variants\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\nBMW M3 Base 2015\u003cbr\u003e\nBMW M3 Base 2016\u003cbr\u003e\nBMW M3 Base 2017\u003cbr\u003e\nBMW M3 Base 2018\u003cbr\u003e\nBMW M4 Base 2015\u003cbr\u003e\nBMW M4 Base 2016\u003cbr\u003e\nBMW M4 Base 2017\u003cbr\u003e\nBMW M4 Base 2018\u003cbr\u003e\nBMW M4 Base 2019\u003cbr\u003e\nBMW M4 Base 2020\u003cbr\u003e\nBMW M4 CS 2019\u003cbr\u003e\nBMW M4 CS 2020\u003cbr\u003e\nBMW M4 GTS 2016","brand":"Dinan","offers":[{"title":"Default Title","offer_id":53855154798908,"sku":"dnnD660-0050-BLK","price":2399.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1865\/9007\/files\/626a00a3168e45bbefbf7238dba66900L.jpg?v=1784843439","url":"https:\/\/necycleshop.com\/products\/dinan-15-20-bmw-m3-m4-f80-f82-f83-free-flow-axleback-exhaust-system-black-tips","provider":"NE Cycle Shop","version":"1.0","type":"link"}