mountune High Performance 2.3L Focus RS/Mustang Short Block
mountune High Performance 2.3L Focus RS/Mustang Short Block
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 short block assembly.
Each short 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-SB-230 |
| Base Engine | 2.3L Ford Ecoboost |
| Bore x Stroke | Ø 87.5 mm x 94 mm |
| Compression Ratio | 9.5:1 |
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Piston |
Upgraded Forged Piston |
| Connecting Rod | Mountune Forged H Beam Rod |
| Crankshaft | Focus RS OEM |
| Main Bearing | Mountune Race Tri-Metal |
| Main Bolts | Premium Grade 8740 Alloy |
| Application | Focus RS 2016-2018 Mustang 2015-2023 |
We take the guesswork out of critical engine assembly allowing and minimize downtime.
This engine specification is designed for typical track day use and those running up to 550 hp power levels with the proper supporting modifications.
Cylinder Support System Information
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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Estimated Build Times
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
Installation & Break-In Process
To see all available installation and break-in instructions, click here.
Warranty information
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
Disclaimers & Legal
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.
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 www.P65warnings.ca.gov.
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Start your engine with a Deposit
Contact us for more informationWith 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.
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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.