{"product_id":"4-to-1-header","title":"4-to-1 Header","description":"The Racing Beat header is a performance exhaust component specifically designed for the 2001-2005 Miata models. This header features a tuned 4-to-1 design configuration, the result of extensive research, development, and over 200 on-chassis dyno runs. Its engineering aims to optimize exhaust gas scavenging characteristics and enhance power output across the entire RPM range. The design also contributes to an improved exhaust note and crucially, retains the factory catalytic converter, ensuring emissions compliance.\n\nManufactured entirely from premium 304-stainless steel, this header is built for superior durability and long-lasting performance. It utilizes large diameter 1.7\" OD tubing for the primary tubes, which then collect into a 2.375\" OD secondary tube. The design incorporates a cast stainless steel engine-to-header flange with specially designed ports for a smooth transition to the primary tubing.","brand":"Racing Beat","offers":[{"title":"Default Title","offer_id":52663411343672,"sku":"56008","price":579.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687133989.jpg?v=1784326688","url":"https:\/\/store.motormia.co\/products\/4-to-1-header","provider":"MOTORMIA","version":"1.0","type":"link"}