{"product_id":"supertech-mazdaduratech-23-stainless-steel-black-nitride-intake-valves-maivn-2301d-8","title":"Supertech Mazda\/Duratech 2.3 Stainless Steel Black Nitride Intake Valves - MAIVN-2301D-8","description":"\u003cp\u003e\u003cspan\u003eSupertech intake valves for the Ford Duratec 2.3 are engineered for racing and high-performance builds. Key specs: Material: stainless steel 21-4n, Head diameter: 35.00mm (std) dish, Stem diameter: 5.48mm, Overall length: 103.40mm, and Groove: single groove. Crafted from premium materials with computer-optimized profiles for improved airflow, heat dissipation and valvetrain stability at high RPM. Ideal for naturally aspirated, turbo and nitrous engine builds. For a complete valvetrain refresh, pair with matched Supertech exhaust valves, valve springs, retainers, valve guides and stem seals. Black nitride surface treatment reduces friction and improves heat dissipation versus uncoated valves, and proper installation requires verifying valve-to-piston clearance and installed spring height during assembly. Backed by Supertech's reputation for valvetrain precision and racing reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecs\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr data-spec-title=\"Groove Type\"\u003e\n\u003ctd class=\"spec-title\"\u003eGroove Type\u003c\/td\u003e\n\u003ctd\u003eSingle Groove\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-spec-title=\"Material\"\u003e\n\u003ctd class=\"spec-title\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003estainless steel 21-4n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-spec-title=\"Head Diameter\"\u003e\n\u003ctd class=\"spec-title\"\u003eHead Diameter\u003c\/td\u003e\n\u003ctd\u003e35.00mm (std) dish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-spec-title=\"Stem Diameter\"\u003e\n\u003ctd class=\"spec-title\"\u003eStem Diameter\u003c\/td\u003e\n\u003ctd\u003e5.48mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-spec-title=\"Length\"\u003e\n\u003ctd class=\"spec-title\"\u003eLength\u003c\/td\u003e\n\u003ctd\u003e103.40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eGroove Type\u003c\/th\u003e\n\u003cth\u003eValve Size\u003c\/th\u003e\n\u003cth\u003eValve Face Type\u003c\/th\u003e\n\u003cth\u003eValve Length\u003c\/th\u003e\n\u003cth\u003eValve Set\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eDuratec 2.0\u003c\/td\u003e\n\u003ctd\u003eSingle Groove\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDished\u003c\/td\u003e\n\u003ctd\u003e103.40mm\u003c\/td\u003e\n\u003ctd\u003eSet of 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eDuratec 2.3\u003c\/td\u003e\n\u003ctd\u003eSingle Groove\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDished\u003c\/td\u003e\n\u003ctd\u003e103.40mm\u003c\/td\u003e\n\u003ctd\u003eSet of 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eDuratec 2.5\u003c\/td\u003e\n\u003ctd\u003eSingle Groove\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDished\u003c\/td\u003e\n\u003ctd\u003e103.40mm\u003c\/td\u003e\n\u003ctd\u003eSet of 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMazda\u003c\/td\u003e\n\u003ctd\u003eMZR 2.0\u003c\/td\u003e\n\u003ctd\u003eSingle Groove\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDished\u003c\/td\u003e\n\u003ctd\u003e103.40mm\u003c\/td\u003e\n\u003ctd\u003eSet of 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMazda\u003c\/td\u003e\n\u003ctd\u003eMZR 2.3\u003c\/td\u003e\n\u003ctd\u003eSingle Groove\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDished\u003c\/td\u003e\n\u003ctd\u003e103.40mm\u003c\/td\u003e\n\u003ctd\u003eSet of 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMazda\u003c\/td\u003e\n\u003ctd\u003eMZR 2.5\u003c\/td\u003e\n\u003ctd\u003eSingle Groove\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDished\u003c\/td\u003e\n\u003ctd\u003e103.40mm\u003c\/td\u003e\n\u003ctd\u003eSet of 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":53762136604979,"sku":"MAIVN-2301D-8","price":423.67,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/9576\/0691\/files\/stainless-intake-1g-8_f2af16bc-f7fb-404b-b0fc-0716d5db0d6b.jpg?v=1785364990","url":"https:\/\/nzperformance.co.nz\/products\/supertech-mazdaduratech-23-stainless-steel-black-nitride-intake-valves-maivn-2301d-8","provider":"NZ Performance Wholesale Ltd","version":"1.0","type":"link"}