{"product_id":"manley-chevrolet-1-600-dia-dish-5-026-o-a-length-severe-duty-exhaust-valves-set-of-8","title":"Manley Chevrolet 1.600 Dia Dish 5.026 O\/A Length Severe Duty Exhaust Valves (Set of 8)","description":"Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400°F, Manley exhaust valves endured 100 million cycles, while competitors failed after just 100,000, proving a 1,000× longer fatigue life. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance. Built for those who demand race-winning strength and precision, Manley Severe Duty® Valves set the industry standard for performance and endurance.","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":47839830540514,"sku":"MAN11823-8","price":452.49,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/5004\/2082\/files\/fec5f7dba71aff461c53f7b003c4211fL_a5677fd5-bede-4043-8271-195f914a184a.jpg?v=1780097533","url":"https:\/\/raceclub.us\/products\/manley-chevrolet-1-600-dia-dish-5-026-o-a-length-severe-duty-exhaust-valves-set-of-8","provider":"Race Club ","version":"1.0","type":"link"}