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.

Installation Guides

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

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Mountune Racing Engines

mountune High Performance 2.3L EcoBoost N1 Long Block - Focus RS

mountune High Performance 2.3L EcoBoost N1 Long Block - Focus RS


Regular price $9,539.10
Regular price $10,599.00 Sale price $9,539.10
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 Ford EcoBoost long block assembly.

Each long block starts off as a brand new aluminum Ford Focus RS open deck engine block which can be strengthened with the Cylinder Support System before being skillfully assembled with mountune forged pistons, forged h-beam connecting rods, tri-metal racing bearings, and a lightweight forged crankshaft.

This engine specification is designed for typical track day use and those running up to 550 hp power levels with the proper supporting modifications.


The Cylinder Support System is a proven method of strengthening open deck engine blocks while maintaining OEM integrity. The support ring is made from aircraft grade 6061-T6 aluminum. It prevents cylinder cracking, walking, and bell-mouthing.

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Additional Information:

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Engine Specifications

  • Product Code: 6069-LB-230
  • Base Engine: 2.3L Ford Ecoboost
  • Cylinder Head: 2.3L 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: Focus RS OEM w/ 3 mm Key
  • Main Bearing: Mountune Race Tri-Metal
  • Main Bolts: OEM High-Tensile Strength
  • Application: Focus RS 2016-2018

Included Components

  • New genuine Ford RS Engine Block (CSS Option Available)
  • New genuine Ford RS Cylinder Head
  • New genuine Ford RS Forged Crankshaft
  • Forged Connecting Rods
  • Forged 87.5mm Piston Set
  • mountune Baffled Oil Control Sump
  • mountune ICR Head Gasket
  • mountune Balance Shaft Delete Modification
  • mountune High-Pressure Oil Pump
  • New genuine Ford complete Camshaft Drive Assembly
  • New genuine Ford Rear Main Seal
  • New genuine Ford cam cover
  • mountune Tri-Metal Motorsport Main and Rod Bearings
  • New genuine Ford Water Pump
  • New genuine Ford Oil Cooler
  • New genuine Ford High-Pressure Fuel Pump Mounting Housing
  • New genuine Ford VVT Solenoids
  • New genuine Ford Oil Dipstick
  • New genuine Ford Engine Block Breather Plate
  • New genuine Ford Spark Plugs
  • New genuine Ford Oil Filler Cap
  • New genuine Ford Camshaft angle sensor

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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