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Engines Built To Order

Estimated build time is currently 10-12 weeks

Please note, that there may be circumstances that may delay the build process including (but not limited to) part shortages and backorders beyond our control.

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Installation Guides

Find the important information you need to install this engine into your build, as well as our recommended break-in procedure.

Install Guides
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Mountune Racing Engines

mountune High Performance 2.3L Stroker Focus ST Short Block

mountune High Performance 2.3L Stroker Focus ST Short Block

6063-SB-230

$4,499.10
$4,999.00 $4,499.10
Sale Sold out

Mountune's extensive knowledge of the Ford EcoBoost engines coupled with our comprehensive motorsport experience provides the foundation for our high performance 2.3L Stroker Ford EcoBoost short block assembly for the Focus ST.

Each short block starts off as a brand new aluminum Ford Focus ST engine block then skillfully assembled with mountune Focus RS forged pistons, Focus RS forged h-beam connecting rods, tri-metal racing bearings, and a keyed OEM Focus RS crankshaft.

This engine is the perfect foundation for your Focus ST for high boost applications including track day use or as a direct replacement for your tired original engine.

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  • PARTS INTENDED FOR COMPETITION USE ONLY
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  • PROPOSITION 65 WARNING
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Additional Information:

Engine Specifications

  • Product Code: 6063-SB-230
  • Base Engine: 2.0L Ford Ecoboost
  • Bore x Stroke: Ø 87.5 mm x 94 mm
  • Compression Ratio: 9.5:1
  • Piston: Upgraded Forged Piston
  • Connecting Rod: Mountune Forged H Beam Rod
  • Crankshaft: OEM Focus RS w/ 3mm Key
  • Main Bearing: Mountune Race Tri-Metal
  • Main Bolts: OEM High-Tensile Strength
  • Application: Focus ST 2013-2018

Included Components

  • 2.3L Stroker Focus ST Short Block Assembly
  • mountune Focus RS forged pistons
  • mountune Focus RS forged h-beam connecting rods
  • mountune tri-metal racing bearings
  • OEM Focus RS crankshaft w/ 3mm Key

Warranty Coverage

Mountune is confident in our products and services and we proudly stand behind our workmanship. Therefore, we offer a limited warranty against defects in workmanship or materials, covering both parts and labor, for a standard period of 1-Year/12,000-Miles.

For more information see, terms & conditions.

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