{"product_id":"5-7l-hemi-cnc-ported-eagle-cylinder-heads","title":"5.7L HEMI CNC Ported Eagle Cylinder Heads","description":"The MMX 5.7L HEMI CNC Ported Eagle Heads are high-performance cylinder head replacements engineered to improve engine efficiency through professional-grade machining. Each unit features proprietary CNC porting on the intake and exhaust runners and precise hand-blending of the valve bowls to maximize airflow. The assemblies come standard with a multi-angle valve job, new seals, shims, and Moly retainers, and are fully cleaned, deburred, and pre-assembled for installation.\n\nBuyers have the option to upgrade from the standard PSI 1511 springs to the higher-performance PSI 1516 springs. Please note that this product carries an estimated 3-5 week lead time. A refundable core charge is required for this exchange; customers may either pay the core fee or choose to send in their own 5.7L HEMI heads to be reworked by MMX.\n\nBefore purchasing, check all local and state laws regarding emissions compliance. If you are unsure about component compatibility for your specific application, contact the manufacturer to ensure proper hardware selection.","brand":"MMX","offers":[{"title":"Default Title","offer_id":52689255137592,"sku":"MMP-5709CNCHD","price":2322.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687391424.jpg?v=1784904142","url":"https:\/\/store.motormia.co\/products\/5-7l-hemi-cnc-ported-eagle-cylinder-heads","provider":"MOTORMIA","version":"1.0","type":"link"}