{"product_id":"inconel-exhaust-valve","title":"Inconel Exhaust Valve","description":"The Supertech Inconel Exhaust Valve is engineered for demanding turbo, supercharged, and endurance racing applications, particularly in Audi and Volkswagen 1.8T 5-valve engines. These valves are made from Inconel\/Nimonic alloy, a nickel-based superalloy renowned for its superior high-temperature strength, oxidation resistance, and durability under extreme conditions.\n\nEach valve features a one-piece forged construction for maximum strength and a non-magnetic composition. The wafer portion is magnetically friction-welded and hardened to a minimum of 52 HRC, ensuring robust performance. The valve stem receives Supertech's 'Superfinish' treatment, resulting in a surface roughness approximately one-third that of standard valves, which contributes to improved sealing and reduced friction.\n\nThese Inconel valves offer significant benefits for modern turbo-charged engines by providing a substantial reduction in valve head temperatures. This cooler operation not only enhances material strength and durability but also grants tuners greater flexibility and a wider range of spark timing advances, allowing for optimized engine performance. Additionally, they offer an average weight reduction of 10% compared to stock valves.\n\nKey specifications include a head diameter of 29.90mm (standard), a triple groove type, a length of 103.90mm, and a stem diameter of 5.94mm. The applications list includes 1999–2005 Audi TT Quattro, 1997–2005 Volkswagen Passat, and 1998–present Volkswagen Golf, Jetta, and New Beetle models.","brand":"Supertech","offers":[{"title":"Default Title","offer_id":52663923540280,"sku":"ST-AEVI-1103-12","price":40.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687720607.webp?v=1784330874","url":"https:\/\/store.motormia.co\/products\/inconel-exhaust-valve","provider":"MOTORMIA","version":"1.0","type":"link"}