{"product_id":"manley-pontiac-400-exhaust-valve-kit-1-770in-head-dia-5-230in-o-a-length-0-3415in-stem","title":"Manley Pontiac 400 Exhaust Valve Kit - 1.770in Head Dia. 5.230in O\/A Length, 0.3415in Stem","description":"\u003cp\u003eStainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.Swirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.Variety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.Recommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.\u003c\/p\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":47155146490023,"sku":"MAN11337-8","price":195.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/files\/72d30868f20b252dc91efd1c08cf3bc8L_724da59e-6d90-44b5-8034-20bd38a02e98.jpg?v=1761181978","url":"https:\/\/www.straightsiximports.com\/en-us\/products\/manley-pontiac-400-exhaust-valve-kit-1-770in-head-dia-5-230in-o-a-length-0-3415in-stem","provider":"Straight Six Imports","version":"1.0","type":"link"}