
mountune High Performance 2.3L MRX Focus RS Long Block
Important Notice: Extended Lead Times Due to high demand and ongoing parts supply delays, our custom-built-to-order engines are experiencing extended lead times. We’re committed to quality and appreciate your patience. For the latest lead time estimates, please contact us. Mountune's extensive knowledge of the Ford EcoBoost engines coupled with our comprehensive motorsport experience provides the foundation for our premium 2.3L Ford EcoBoost long block assembly. Each long block starts off as a brand new aluminum Ford Focus RS engine block strengthened with the Cylinder Support System then skillfully assembled with mountune forged pistons, forged i-beam connecting rods, tri-metal racing bearings, and a lightweight forged crankshaft. Our lightweight forged crankshaft with an overall weight reduction of 9 lbs from stock for maximum performance and excellent engine response. 2.3L MRX Long Block is topped with a mountune MRX Cylinder Head - Focus RS. A factory Focus RS cylinder block that