{"product_id":"manley-sbc-1-600-severe-duty-exhaust-valves-set-of-9","title":"Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8)","description":"\u003cp\u003eManley 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.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSwirl polishing and machined faces improved airflow\/optimized efficiency\u003c\/li\u003e\n\u003cli\u003eExotic alloys for superior tensile strength, reliability, and longevity\u003c\/li\u003e\n\u003cli\u003eProven fatigue strength for extreme performance\u003c\/li\u003e\n\u003cli\u003eChrome stems and hard tips enhance durability\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":45964167315612,"sku":"MAN11771-8","price":452.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0440\/6729\/1292\/files\/c2008e4f5a51a63cc4bb171d46e63bb4_e3536a9b-b47e-4b39-8264-88e3b82297d3.jpg?v=1774902904","url":"https:\/\/www.mypartsguy.ca\/products\/manley-sbc-1-600-severe-duty-exhaust-valves-set-of-9","provider":"My Parts Guy MPG Auto","version":"1.0","type":"link"}