{"product_id":"valved-rear-muffler-system","title":"Valved Rear Muffler System","description":"The Grail GR-21CAYMANGT4 is an ECE-approved valved exhaust system specifically engineered for the Porsche 718 Cayman GT4. This system includes a valved rear muffler and offers the option of dual tailpipes.\n\nThe valved design allows for adjustable sound profiles, providing a sharper sound when desired.\n\nAccording to available information, Grail exhaust systems for the Porsche 718 Cayman GT4 are approximately 3kg lighter than the OEM system, and the OPFs (Otto Particulate Filters) remain installed, ensuring compliance and emissions standards are met. Installation instructions are typically not included, and professional installation may be recommended.","brand":"Grail","offers":[{"title":"Default Title","offer_id":52688596599096,"sku":"GR-21CAYMANGT4","price":4916.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/664714620.webp?v=1784891611","url":"https:\/\/store.motormia.co\/products\/valved-rear-muffler-system","provider":"MOTORMIA","version":"1.0","type":"link"}