{"product_id":"manley-chevrolet-small-block-exhaust-valve-kit-1-560in-head-dia-4-911in-o-a-length-0-3415in-stem-1","title":"Manley Chevrolet Small Block Exhaust Valve Kit - 1.560in Head Dia. 4.911in O\/A Length, 0.3415in 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":44789298429986,"sku":"MAN11501-8","price":188.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/1231\/7218\/files\/fec5f7dba71aff461c53f7b003c4211fL.jpg?v=1769849918","url":"https:\/\/shopjdm.com\/products\/manley-chevrolet-small-block-exhaust-valve-kit-1-560in-head-dia-4-911in-o-a-length-0-3415in-stem-1","provider":"ShopJDM","version":"1.0","type":"link"}