{"product_id":"lost-motion-assembly-kit","title":"Lost Motion Assembly Kit","description":"The ScienceofSpeed Lost Motion Assembly (LMA) Kit is designed to address a known issue in the 1991-1999 Honda NSX: the failure of the factory piston-style LMA. This component is responsible for pre-loading the VTEC rocker in its unlocked position, but over time, oil contaminants can cause the piston to seize. This seizure results in a rattling VTEC rocker, particularly noticeable at idle, which can lead to further engine damage and an audible tapping noise.\n\nThe ScienceofSpeed LMA Kit replaces the problematic piston design with a more robust coil spring system, mirroring the design used in later Honda models. Precision-engineered stainless steel inserts ensure compatibility with the early NSX cylinder heads, allowing for a direct installation. This upgraded design is not only more durable but also offers an increased 28% stroke and a larger rocker contact patch, making it an excellent choice for engines equipped with high-lift camshafts.\n\nInstallation of this kit requires the removal of rocker arm shafts. An optional seal kit, containing four O-rings and four washers, is recommended if the original seals are not to be reused. This LMA Kit is specifically compatible with 1991-1999 NSX models only.","brand":"ScienceofSpeed","offers":[{"title":"Default Title","offer_id":52689385554232,"sku":"HON-enpp-661","price":487.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687665509.jpg?v=1784906068","url":"https:\/\/store.motormia.co\/products\/lost-motion-assembly-kit","provider":"MOTORMIA","version":"1.0","type":"link"}