{"product_id":"bmw-g29-z4-m40i-valved-sport-exhaust-system","title":"Valvetronic Designs BMW G29 Z4 M40i Valved Sport Exhaust System","description":"\u003cp style=\"margin:1em 0\"\u003eThe \u003cstrong\u003eValvetronic Designs Valved Exhaust System\u003c\/strong\u003e for the BMW G29 Z4 M40i is the ultimate upgrade for enthusiasts who demand both performance and versatility. Developed from our extensive R\u0026amp;D on B58-powered platforms—including the Supra and M340i—this system transforms the Z4’s sound and performance, unlocking the true potential of BMW’s celebrated inline-six.\u003c\/p\u003e\n\u003cul style=\"margin:1em 0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eValves Open:\u003c\/strong\u003e A rich, aggressive tone with crisp throttle response, pronounced turbo spool, and motorsport-inspired overrun.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValves Closed:\u003c\/strong\u003e A refined, stock-like sound perfect for long cruises or early-morning starts—ideal when you want performance without the attention.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"margin:1em 0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Flow Design:\u003c\/strong\u003e Single \u003cstrong\u003e3.5\" midsection\u003c\/strong\u003e transitioning into \u003cstrong\u003edual 3\" mandrel-bent runs\u003c\/strong\u003e for optimal exhaust scavenging and reduced backpressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced Sound Profile:\u003c\/strong\u003e Tuned for a deep, full-bodied note inspired by our acclaimed B58 Supra and M340i systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Construction:\u003c\/strong\u003e TIG-welded \u003cstrong\u003eT304 stainless steel\u003c\/strong\u003e for exceptional durability and corrosion resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"margin:1em 0\"\u003e\u003cli\u003e\u003cstrong\u003e2017+ BMW G29 Z4 M40i\u003c\/strong\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul style=\"margin:1em 0\"\u003e\n\u003cli\u003eFully mandrel-bent for maximum flow\u003c\/li\u003e\n\u003cli\u003ePrecision TIG welds for high strength\u003c\/li\u003e\n\u003cli\u003eBuilt from T304 stainless steel\u003c\/li\u003e\n\u003cli\u003eElectronic-actuated valves for rapid and reliable operation\u003c\/li\u003e\n\u003cli\u003e11.1 lbs lighter than the factory exhaust\u003c\/li\u003e\n\u003cli\u003eBeautiful tips to complement the Z4’s styling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"pu-table\" style=\"width:100%;border-collapse:separate;border-spacing:0;border:0;box-shadow:none;outline:none;background:none;table-layout:fixed;margin:0 0 0.75em\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"border:0;padding:0\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/poQpP-0yiCA\" title=\"YouTube video player\" loading=\"lazy\" allow=\"accelerometer;autoplay;clipboard-write;encrypted-media;gyroscope;picture-in-picture\" allowfullscreen style=\"display:block;width:100%;max-width:560px;aspect-ratio:16\/9;border:0;border-radius:8px\"\u003e\u003c\/iframe\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ctable class=\"pu-table\" style=\"width:100%;border-collapse:separate;border-spacing:0;border:0;box-shadow:none;outline:none;background:none;table-layout:fixed;margin:0 0 0.75em\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"border:0;padding:0\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/HM6apeJzueI\" title=\"YouTube video player\" loading=\"lazy\" allow=\"accelerometer;autoplay;clipboard-write;encrypted-media;gyroscope;picture-in-picture\" allowfullscreen style=\"display:block;width:100%;max-width:560px;aspect-ratio:16\/9;border:0;border-radius:8px\"\u003e\u003c\/iframe\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ctable class=\"pu-table\" style=\"width:100%;border-collapse:separate;border-spacing:0;border:0;box-shadow:none;outline:none;background:none;table-layout:fixed;margin:0 0 0.75em\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"border:0;padding:0\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/h6xlGdmZRVY\" title=\"YouTube video player\" loading=\"lazy\" allow=\"accelerometer;autoplay;clipboard-write;encrypted-media;gyroscope;picture-in-picture\" allowfullscreen style=\"display:block;width:100%;max-width:560px;aspect-ratio:16\/9;border:0;border-radius:8px\"\u003e\u003c\/iframe\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Valvetronic Designs","offers":[{"title":"(4) Brushed Steel (3.5\" Outlet)","offer_id":59183112519820,"sku":"BMW.Z4.G29.VSES.BR.BRSH","price":2799.99,"currency_code":"USD","in_stock":true},{"title":"(4) Burnt (3.5\" Outlet)","offer_id":59183112552588,"sku":"BMW.Z4.G29.VSES.BR.BRT","price":2799.99,"currency_code":"USD","in_stock":true},{"title":"(4) Black (3.5\" Outlet)","offer_id":59183112585356,"sku":"BMW.Z4.G29.VSES.BR.BLK","price":2799.99,"currency_code":"USD","in_stock":true},{"title":"(4) Forged Carbon (3.5\" Outlet)","offer_id":59183112618124,"sku":"BMW.Z4.G29.VSES.BR.FC","price":2799.99,"currency_code":"USD","in_stock":true},{"title":"(4) 1x1 Carbon Fiber (3.5\" Outlet)","offer_id":59183112650892,"sku":"BMW.Z4.G29.VSES.BR.RC","price":2799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0789\/3300\/0332\/files\/A7402056_297439d7-bd4d-49bb-9930-def97c8caa43.jpg?v=1789532923","url":"https:\/\/vpmotorworks.com\/products\/bmw-g29-z4-m40i-valved-sport-exhaust-system","provider":"VP Motorworks","version":"1.0","type":"link"}