{"product_id":"mrx-1-6l-long-block-engine-assembly","title":"MRX 1.6L Long Block Engine Assembly","description":"The Mountune 1.6L MRX Long Block serves as a high-performance, race-ready engine solution for 2014-2019 Ford Fiesta ST models. Each assembly is built starting from a brand new Ford OEM aluminum block, which is fortified with a 6061-T6 aircraft-grade aluminum Cylinder Support System. This reinforcement provides essential support between cylinders to prevent common failure points like cracking, walking, or bell-mouthing while maintaining original equipment integrity.\n\nTechnically advanced, this long block features Mountune forged pistons, forged H-beam connecting rods, and race-grade tri-metal bearings. The MRX cylinder head is a factory unit that has undergone precision machining to improve intake airflow by 51% and exhaust airflow by 24%. It is equipped with high-performance black nitrided intake valves, sodium inconel exhaust valves, motorsport valve stem seals, and V2 camshafts for optimized engine output.\n\nThis assembly also includes a baffled oil control sump and premium high-performance cylinder head studs for reliable operation under demanding conditions. It provides a comprehensive, balanced engine foundation suitable for enthusiasts seeking increased durability and performance in their Fiesta ST build.","brand":"Mountune","offers":[{"title":"Default Title","offer_id":52663052960056,"sku":"6064-LB-160S2","price":3799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687512703.jpg?v=1784323272","url":"https:\/\/store.motormia.co\/products\/mrx-1-6l-long-block-engine-assembly","provider":"MOTORMIA","version":"1.0","type":"link"}