{"product_id":"black-nitrided-exhaust-valve-set","title":"Black Nitrided Exhaust Valve Set","description":"The Supertech Black Nitrided Exhaust Valve set provides a high-performance upgrade for Honda K20 and K24 engines. Each valve is precision-engineered from Stainless Steel 23-8N, a material chosen for its strength at elevated temperatures. The black nitride coating offers superior surface hardness while maintaining core ductility, which improves durability and reduces carbon buildup.\n\nThese valves feature a \"Superfinish\" on the stem, resulting in a surface roughness approximately one-third that of a standard valve. This smoother finish, combined with an undercut stem and back-cut angle, significantly reduces friction, leading to better flow rates and improved sealing. The valves are constructed as a one-piece forged unit for added strength and incorporate a magnetic friction-welded wafer. They are hardened to a minimum of 52 HRC.\n\nThis set includes eight exhaust valves, each with a 30.00mm head diameter (standard), a 108.65mm length, and a 5.45mm stem diameter. They are designed with a single groove for valve keepers.\n\nApplications include the 2002-2004 Acura RSX Type S and the 2004-2008 Acura TSX. Due to the nature of performance engine components, these parts are sold without express warranty.","brand":"Supertech","offers":[{"title":"Default Title","offer_id":52663920787768,"sku":"HEVN-1020D-8 \/ HIVN-1020D-8","price":23.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687720507.jpg?v=1784330846","url":"https:\/\/store.motormia.co\/products\/black-nitrided-exhaust-valve-set","provider":"MOTORMIA","version":"1.0","type":"link"}