mountune’s extensive knowledge of the Ford EcoBoost engine coupled with broad motorsport experience provides the foundation for our Premium High Performance 1.6L Ford EcoBoost short block. Each short block is skillfully assembled using a brand new Ford ST engine block coupled with mountune Forged Pistons, Forged Connecting Rods, bearings and a genuine new Ford crankshaft. This short block is the perfect foundation for your Fiesta ST for high boost applications including track day use. We take the guess work out of critical engine assembly allowing you to install your existing cylinder head and other base engine components to this premium improved foundation. Tested at over 400hp, this engine specification is designed for typical track day use and those running high power levels with supporting modifications.

The genuine Fiesta ST engine block is first inspected, de-burred, and the bores are honed to perfection to receive mountune Forged Pistons. The rotating assembly that includes a new lightweight crankshaft and mountune Forged H-Beam Connecting Rods is balanced to within .5 gram. The select parts are professionally assembled by one of mountune's skilled engine builders. Each assembly includes a detailed data sheet showing all critical engine dimensions.