{"product_id":"manley-chevrolet-big-block-exhaust-valve-kit-1-900in-head-dia-5-454in-o-a-length-0-3715in-stem","title":"Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O\/A Length, 0.3715in Stem","description":"Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy: The hallmark of excellence in exhaust valve material construction.Built to Last: Featuring chrome stems and hard tips for exceptional longevity and wear resistance.Optimized Performance: Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency.","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":53205285568796,"sku":"MAN11733-8","price":489.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7614\/9689\/files\/fec5f7dba71aff461c53f7b003c4211fL_dfe30463-fef7-4c7c-b8a2-de8d21bc5c0c.jpg?v=1761051587","url":"https:\/\/www.demonicperformance.com\/products\/manley-chevrolet-big-block-exhaust-valve-kit-1-900in-head-dia-5-454in-o-a-length-0-3715in-stem","provider":"Demonic Performance ","version":"1.0","type":"link"}