{"product_id":"manley-circle-track-roller-polished-nextek-series-valve-springs","title":"Manley Circle Track Roller Polished NexTek Series Valve Springs","description":"From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most demanding race conditions. That means more consistent spring force deep into a run, reduced valve bounce, and improved overall stability for high-RPM performance. Built to outperform and outlast in real-world competition.","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":45021668311194,"sku":"MAN221441P-16","price":609.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/3044\/8852\/files\/ab9f189fffefb9add79de47605b2fd6d_2981a618-71f0-4f95-bd5c-c80146fc29b9.jpg?v=1718866605","url":"https:\/\/throwdownperformance.com\/products\/manley-circle-track-roller-polished-nextek-series-valve-springs","provider":"Throwdown Performance, LLC","version":"1.0","type":"link"}