{"product_id":"dinan-high-flow-middle-exhaust-3in-bmw-g80-m3-g82-m4","title":"Dinan High Flow Middle Exhaust 3in - BMW G80 M3 \/ G82 M4","description":"\u003cp\u003eThe Dinan 3-inch High Flow Middle Exhaust replaces the factory center section from the secondary catalysts back to the axleback, deleting both OEM resonators and upgrading from the restrictive hydro-formed factory tubing to 3-inch T304 stainless steel. At the heart of the system sits a hand-fabricated mandrel-bent X-pipe, a meaningful distinction over the stamped X-pipes common in the aftermarket. The mandrel-bent construction maintains consistent interior diameter through the crossover, minimizing restriction and promoting symmetric flow to both exhaust banks. By balancing pressure across both sides of the S58's twin-scroll outputs, the X-pipe eliminates the tonal inconsistencies caused by uneven flow in the stock mid-section, producing a fuller, smoother exhaust note with noticeably increased volume compared to the resonated factory system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e+\u003c\/strong\u003e Replaces factory center section from secondary cats to axleback\u003cbr\u003e\u003cstrong\u003e+\u003c\/strong\u003e 3-inch T304 stainless steel tubing, larger than OEM hydro-formed section\u003cbr\u003e\u003cstrong\u003e+\u003c\/strong\u003e Hand-fabricated mandrel-bent X-pipe for unrestricted, symmetric exhaust flow\u003cbr\u003e\u003cstrong\u003e+\u003c\/strong\u003e Eliminates both OEM resonators for increased volume and improved tone\u003cbr\u003e\u003cstrong\u003e+\u003c\/strong\u003e Fits BMW G80 M3 and G82\/G83 M4 with S58 engine\u003cbr\u003e\u003cstrong\u003e+\u003c\/strong\u003e USA engineered and manufactured\u003c\/p\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":51268701716726,"sku":"DNND660-0094","price":899.95,"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-3in-bmw-g80-m3-g82-m4","provider":"AutoTecknic USA","version":"1.0","type":"link"}