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

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

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.

Engine Build 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
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 Premium Grade 8740 Alloy
Application Focus RS 2016-2018

All NEW Components - No Core Charge

  • 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

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.

Regular price $10,577.00
Regular price $10,577.00 Sale price $10,577.00
Sale Sold out

Estimated Build Times

For built to order engine assemblies the current estimated build time is 10-12 weeks. (As of April 2023)

For more information please contact us.

Installation & Break-In Process

To see all available installation and break-in instructions, click here.

Warranty information

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.

Disclaimers & Legal

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.

California Residents Prop 65 Information
California’s Proposition 65 entitles California consumers to special warnings for products that contain chemicals known to the state of California to cause cancer and birth defects or other reproductive harm if those products expose consumers to such chemicals above certain threshold levels. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information visit

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  • Start your engine with a Deposit

    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.

    Contact us for more information 
  • Flat-Rate Freight Shipping

    Engine assemblies ship anywhere in the continental USA for one of two flat-rates. Long block assemblies ship for flat-rate of $350. Short block assemblies ship for a flat-rate of $100.