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Engines Ford EcoBoost V6 Engines Ford Kent & Lotus Engines Honda K-Series Engines Merch & Gear WINTER SALE Search site Submit search Nav Menu 2 Nav Menu 3 Nav Menu 4 Nav Menu 5 Nav Menu 6 Nav Menu 7 Nav Menu 8 Home > Parts & Components > Browse by Components > Crate Engines > Complete Short Blocks > 2.3L 4-Cylinder EcoBoost > mountune High Performance 2.3L Stroker Focus ST Short Block Alternative Views: WARNING : California Residents Prop 65 Information Price:$4,525.00 Availability: Usually Ships in 6 to 8 Weeks Product Code: 6063-SB-230 Add Keyed Crankshaft*: No Thanks Add Keyed Crankshaft [Add $300.00] Qty: Description Installation Guide mountune High Performance 2.3L Stroker Focus ST Short BlockApplicationFocus ST 2013-2018The perfect way to increase displacement and add performance when rebuilding your Focus ST engine. mountune’s extensive knowledge of the Ford EcoBoost engine coupled with broad motorsport experience provides the foundation for our Premium High Performance 2.3L Ford EcoBoost short block. Each short block is skillfully assembled using a brand new Ford engine block coupled with mountune Forged Pistons, Forged Connecting Rods and high performance bearings. This short block is the perfect foundation for your Focus 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.Short Block FeaturesThe 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 Ford RS Forged 94mm crankshaft (keyed option available) and mountune Forged Connecting Rods is balanced to within .5 gram. The select parts are professionally assembled by one of mountune's skilled engine builders using tri-metal race spec bearings.Each assembly includes a detailed data sheet showing all critical engine dimensions.Bore: 87.5mmStroke: 94mmCompression Ratio 9.5:1IncludesNew Ford EcoBoost ST Engine BlockNew Ford RS 94mm Forged Crankshaftmountune Forged Connecting Rodsmountune Forged Pistonsmountune, Tri-metal bearings w locating tangAssembly balanced to within .5 gramComplete blue-print assemblyRing gap setBearing clearance setDeck height checkedConnecting Rod side clearance setCrankshaft end float setBalance shaft deleteKeyed crank with matching chain sprocket and crankshaft pulley (optional extra cost)WARNING:This part has been designed and is intended for off-highway application only. Installation of this part on a vehicle that is driven on public roads may violate U.S. and Canadian laws and regulations relating to emission requirements and motor vehicle safety standards. Click Here for Emissions compliance information.Owning a Mountune Racing Engine has never been easier!We offer multiple options to make obtaining your own Mountune USA custom engine assembly simple. With a 50% deposit we can start your engine assembly process. The remaining balance will be due upon completion of your long block or short block engine.You can also take advantage of 6 months of no interest financing of your Mountune long block or short block engine assembly on approved credit with PayPal Credit. For more information click here.Please note engine assemblies, both long and short blocks, are considered custom products and cannot be returned. Additionally, once the engine build and assembly process has begun, the order cannot be canceled.For more information please contact us at info@mountuneUSA.com or to order by phone call 714-424-9400. Installation Guide Recommended product 2.0L EcoBoost Oil Control System Oil Pump, 2.0L and 2.3L EcoBoost mountune Oil Breather Plate - Ford EcoBoost 2.0L and 2.3L 2.0L EcoBoost Engine Gasket Set Price:$209.00 Add Price:$89.28 Add Price:$169.00 Add Sale price:$499.00 Add Customers also looked at: mountune High Performance 2.3L Focus RS / Mustang Short Block mountune High Performance 2.3L Closed Deck Focus RS Short Block Price:$5,899.00 Add Price:$5,500.00 Add Share your knowledge of this product. Be the first to write a review » Browse for more products in the same category as this item: Parts & Components > Browse by Components > Crate Engines > Complete Short Blocks > 2.3L 4-Cylinder EcoBoost Parts & Components > Browse by Components > Crate Engines Motorsport > Mountune Racing Engines > Ford EcoBoost 4-Cyl. 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