{"product_id":"dinan-valved-cat-back-exhaust-bmw-x3-x4-m40i-g01-g02","title":"Dinan Valved Cat-Back Exhaust – BMW X3 M40i \/ X4 M40i (G01\/G02)","description":"\u003cstyle\u003e.sl-desc h2{font-size:1.15em;letter-spacing:.06em;text-transform:uppercase;border-bottom:2px solid #111;padding-bottom:6px;margin:1.6em 0 .7em}.sl-desc h3{font-size:1em;margin:1.2em 0 .4em}.sl-desc ul{margin:0 0 1em 1.2em}.sl-desc li{margin:.25em 0}.va-table{width:100%;border-collapse:collapse;margin:.5em 0 1em;font-size:.95em}.va-table th{text-align:left;padding:10px 8px;border-bottom:2px solid #333;white-space:nowrap}.va-table td{padding:8px;border-bottom:1px solid #e5e5e5;vertical-align:top}.sl-note{font-size:.9em;color:#555;margin:.4em 0 1em}\u003c\/style\u003e\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eThe Dinan Valved Cat-Back Exhaust for the G01 X3 M40i and G02 X4 M40i replaces the exhaust from the catalytic converter back, freeing up flow and deepening the exhaust note while keeping full electronic control over volume through the retained factory-style valve. It's engineered to OEM-quality fit and finish for a clean, direct-bolt installation.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eT304 stainless steel construction, TIG welded\u003c\/li\u003e\n\u003cli\u003eCat-back design — replaces the full exhaust from the catalytic converter rearward, not just the axle-back section\u003c\/li\u003e\n\u003cli\u003eComputer-controlled electronic exhaust valve retained for on-demand volume control\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on using factory hangers and connection points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDinan valved cat-back exhaust system\u003c\/li\u003e\n\u003cli\u003eRequired clamps, gaskets, and mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTECH RESOURCES\u003c\/h2\u003e\n\u003ch3\u003eAdditional Parts Required\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eThe \u003ca href=\"\/products\/dinan-dual-exhaust-valve-remote\"\u003eDinan Dual Exhaust Valve Remote (R660-0002)\u003c\/a\u003e is sold separately and is required to manually override the electronic valve independent of drive mode.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eInstallation instructions: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/01944fe49d745ee0dd9f91e0a2dce34046c7cf97_a505c7e2-ae22-4683-bb20-7038429a14be.pdf?v=1788302541\"\u003ePDF\u003c\/a\u003e.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eDinan's own product page for D660-0099 does not state a year range directly in its main description; the 2018–2025 fitment shown here matches the G01\/G02 M40i platform and is cross-confirmed by Dinan-sourced listings on Holley and getBMWparts. Confirm current-year fitment with Speed Logic before ordering for a newer model year.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003ePART NUMBER\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eD660-0099\u003c\/strong\u003e — Valved Cat-Back Exhaust\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eVEHICLE APPLICATIONS\u003c\/h2\u003e\n\u003ctable class=\"va-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eX3 M40i\u003c\/td\u003e\n\u003ctd\u003eG01\u003c\/td\u003e\n\u003ctd\u003eB58\u003c\/td\u003e\n\u003ctd\u003e2018–2025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eX4 M40i\u003c\/td\u003e\n\u003ctd\u003eG02\u003c\/td\u003e\n\u003ctd\u003eB58\u003c\/td\u003e\n\u003ctd\u003e2018–2025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Dinan","offers":[{"title":"Polished","offer_id":52599732535576,"sku":"D660-0099","price":2049.95,"currency_code":"USD","in_stock":true},{"title":"Black Tips","offer_id":52599744397592,"sku":"D660-0099-BLK","price":2049.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/60d2d49823770533a3572e8448056812468e4529.avif?v=1788303027","url":"https:\/\/speedlogicauto.com\/products\/dinan-valved-cat-back-exhaust-bmw-x3-x4-m40i-g01-g02","provider":"SPEED LOGIC","version":"1.0","type":"link"}