{"product_id":"manley-chevrolet-small-block-exhaust-valve-kit-1-600in-head-dia-4-950in-o-a-length-0-3136in-stem","title":"Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 4.950in O\/A Length, 0.3136in Stem","description":"Stainless 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.","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":53205300445468,"sku":"MAN12301-8","price":192.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7614\/9689\/files\/c6ccd65ebfd1e956c2aff76b8661b6a9L_418591a9-058b-46ed-b8c5-848dce85313b.jpg?v=1761051681","url":"https:\/\/www.demonicperformance.com\/products\/manley-chevrolet-small-block-exhaust-valve-kit-1-600in-head-dia-4-950in-o-a-length-0-3136in-stem","provider":"Demonic Performance ","version":"1.0","type":"link"}