{"product_id":"ls-series-cast-steel-rocker-arms-1-7-ratio","title":"LS Series Cast Steel Rocker Arms 1.7 Ratio","description":"The Summit Racing Pro LS Upgraded Rocker Arms (SUM-141556) are engineered to enhance the performance and durability of GM LS series engines. Constructed from high-grade cast steel, these rocker arms offer a 1.7 ratio and a straight body design, making them a robust upgrade over factory components.\n\nThese rocker arms are specifically designed to fit LS1 cathedral port heads. Their upgraded trunnion design replaces the factory bearing and powdered metal components, offering improved longevity and reliability, especially when used with higher rate springs and performance camshafts. The set includes all necessary hardware for installation.\n\nThe direct-fit design ensures compatibility with a range of LS engines, including LS1, LS2, LS6, LQ4, and LQ9 variants. This upgrade is ideal for enthusiasts looking to maximize their engine's potential and ensure consistent valvetrain stability under demanding conditions.","brand":"Summit","offers":[{"title":"Default Title","offer_id":52866413265208,"sku":"SUM-141556","price":326.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687699518.jpg?v=1787907454","url":"https:\/\/store.motormia.co\/products\/ls-series-cast-steel-rocker-arms-1-7-ratio","provider":"MOTORMIA","version":"1.0","type":"link"}