{"product_id":"dinan-21-26-bmw-m3-freeflow-axleback-exhaust-system-polished","title":"Dinan Free Flow Axle-Back Exhaust System (Polished) - 2021-2026 BMW M3","description":"\u003cp\u003eThe Dinan axle-back exhaust changes the sound and rear appearance of 2021-2026 BMW M3. This version supplies polished exhaust tips.\u003c\/p\u003e\u003cp\u003eThe system retains factory valve operation, using the muffler path for a more subdued note and an alternate flow path when the valves open. That gives the driver a wider range of sound character through the vehicle’s original control strategy.\u003c\/p\u003e\u003cp\u003eWith the valves closed, the muffler route exits through the inner tips. Opening the valves allows most flow to bypass the muffler, increasing sound output under the factory control strategy.\u003c\/p\u003e\u003ch3\u003eTechnical details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eValve operation: factory-controlled valves retained.\u003c\/li\u003e\n\u003cli\u003eConstruction: T304 Stainless Steel.\u003c\/li\u003e\n\u003cli\u003eTip finish: Polished.\u003c\/li\u003e\n\u003cli\u003eTubing diameter: 76mm versus 70mm in the original system.\u003c\/li\u003e\n\u003cli\u003eListed vehicle application: 2021-2026 BMW M3.\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: D660-0093.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment and installation\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConfirm body style, drivetrain and the original rear-valance configuration. Review the installation procedure for cutting, joining and valve-transfer requirements.\u003c\/li\u003e\n\u003cli\u003eThe optional Dinan middle exhaust is sold separately; it is not included with this axle-back.\u003c\/li\u003e\n\u003cli\u003eA stronger exhaust note does not mean zero cabin resonance; other modifications can change the sound substantially.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":49292297666810,"sku":"DNND660-0093","price":2349.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/73a9b3ded1a44373bd17cced993c34b8L.jpg?v=1783033538","url":"https:\/\/lgcracing.com\/products\/dinan-21-26-bmw-m3-freeflow-axleback-exhaust-system-polished","provider":"Legacy Racing","version":"1.0","type":"link"}