{"product_id":"dinan-high-flow-middle-exhaust-bmw-g80-m3-g82-m4","title":"Dinan 3in High Flow Middle Exhaust - BMW G80 M3 \/ G82 \/ G83 M4 (2021-2026)","description":"\u003cp\u003eMost of what keeps your M3 or M4 quiet sits in the middle of the car. Two resonators and a hydro-formed center section take the rasp out of the S58 before it ever reaches the rear muffler. If you have heard a G80 with the resonators gone, you know what you are missing.\u003c\/p\u003e\n\u003cp\u003eThe Dinan High Flow Middle Exhaust for the BMW G80 M3 and G82\/G83 M4 replaces the factory center section from the secondary catalysts back to the axle-back. Both resonators come out, 3 in. (76mm) T304 stainless tubing goes in, and a hand-fabricated mandrel-bent X-pipe sits at the center. Dinan says the result is a more aggressive tone and more volume than stock, and the part is 5 lbs lighter than the factory piece.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow the Dinan High Flow Middle Exhaust Changes the S58 Sound\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStamped X-pipes pinch the tube in the bends. Dinan's X-pipe is mandrel-bent, so the diameter stays constant through the crossover and flow stays even to both sides with minimal restriction. Balancing the two sides also removes the tonal unevenness you hear from the resonated stock mid-section. What you get is a fuller, smoother note with a clear step up in volume.\u003c\/p\u003e\n\u003cp\u003eIt is 100% stainless steel with factory-like fitment and all mounting hardware included. You can run it with the factory rear section, the BMW M Performance exhaust, or the Dinan axle-back for the complete Dinan system.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMiddle Exhaust Fitment and Legal Status\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCheck your rear section first. Dinan confirms fitment with the stock exhaust, the M Performance exhaust and the Dinan axle-back. Other aftermarket axle-backs are not guaranteed to fit. Install is about 1.5 hours with no cutting. Dinan classifies the part as not affecting vehicle emissions and legal for sale or use on emissions-controlled vehicles. Dinan part number D660-0094. Sold by AutoTecknic, an authorized Dinan dealer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDinan 3 in. T304 stainless middle exhaust with mandrel-bent X-pipe\u003c\/li\u003e\n  \u003cli\u003eMounting hardware and clamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces the factory center section from the secondary catalysts to the axle-back\u003c\/li\u003e\n  \u003cli\u003eDeletes both factory resonators for more volume\u003c\/li\u003e\n  \u003cli\u003e3 in. (76mm) tubing in place of the hydro-formed factory section\u003c\/li\u003e\n  \u003cli\u003eHand-fabricated mandrel-bent X-pipe for even, low-restriction flow\u003c\/li\u003e\n  \u003cli\u003e5 lbs lighter than stock: 17 lbs vs 22 lbs\u003c\/li\u003e\n  \u003cli\u003e100% T304 stainless steel\u003c\/li\u003e\n  \u003cli\u003eWorks with the stock, M Performance or Dinan axle-back\u003c\/li\u003e\n  \u003cli\u003eAbout 1.5 hours of labor\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFits the following S58-powered BMW M models:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBMW M3 \/ G80 Sedan (2021-2026): M3, M3 Competition, M3 Competition xDrive\u003c\/li\u003e\n  \u003cli\u003eBMW M4 \/ G82 Coupe (2021-2026): M4, M4 Competition, M4 Competition xDrive\u003c\/li\u003e\n  \u003cli\u003eBMW M4 \/ G83 Convertible (2022-2026): M4 Competition xDrive Convertible\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot confirmed for the M3 CS or M4 CSL. Contact us before ordering for those cars.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA shop or DIYer with a lift can do this in about 1.5 hours. Follow the Dinan instructions included with the kit.\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003eLet the exhaust cool completely and raise the car safely on a lift.\u003c\/li\u003e\n  \u003cli\u003eSupport the rear section and loosen the clamps at both ends of the factory center section.\u003c\/li\u003e\n  \u003cli\u003eRelease the center section from its hangers and remove it.\u003c\/li\u003e\n  \u003cli\u003eFit the Dinan middle exhaust in the factory location using the supplied hardware, leaving clamps loose for alignment.\u003c\/li\u003e\n  \u003cli\u003eAlign the full system, torque every clamp and check for leaks with the engine running.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":51268701716726,"sku":"DNND660-0094","price":808.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2674\/6278\/files\/c05ef41c21f31d3b87ef9ff7c19836aeL.jpg?v=1784135591","url":"https:\/\/autotecknic.com\/products\/dinan-high-flow-middle-exhaust-bmw-g80-m3-g82-m4","provider":"AutoTecknic USA","version":"1.0","type":"link"}