{"product_id":"manley-chevrolet-big-block-exhaust-valve-kit-1-940in-head-dia-5-422in-o-a-length-0-3415in-stem","title":"Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O\/A Length, 0.3415in 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":53205289795868,"sku":"MAN11773-8","price":489.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7614\/9689\/files\/1ecc177028ebb28898eba0253019ba05L_1562ab33-e2a0-4597-8ba3-3db9eb94eadf.jpg?v=1761051602","url":"https:\/\/www.demonicperformance.com\/products\/manley-chevrolet-big-block-exhaust-valve-kit-1-940in-head-dia-5-422in-o-a-length-0-3415in-stem","provider":"Demonic Performance ","version":"1.0","type":"link"}