

MOUNTUNE RACING ENGINES
Our in-house engine builders are some of the most experienced and knowledgeable in the industry.
-
ENGINE COMPONENTS:
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.
Mountune Racing Engines
mountune High Performance 2.3L Stroker Focus ST Short Block
mountune High Performance 2.3L Stroker Focus ST Short Block
SKU:6063-SB-230
Couldn't load pickup availability
Share
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.

-
PARTS INTENDED FOR COMPETITION USE ONLY
Click here for more details. -
PROPOSITION 65 WARNING
Click here for more details.
Additional Information:
Collapsible content
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.

MOTUL IS NOW THE OFFICIAL ENGINE OIL OF MOUNTUNE
Shop Motul OilCompare Engines:
-
mountune High Performance 1.6L EcoBoost N1 Long Block - Fiesta ST
Vendor:Mountune Racing EnginesRegular price $6,165.00Regular priceUnit price / per$6,850.00Sale price $6,165.00Sale -
mountune High Performance 2.0L EcoBoost N1 Long Block - Focus ST
Vendor:Mountune Racing EnginesRegular price $7,559.10Regular priceUnit price / per$8,399.00Sale price $7,559.10Sale -
mountune High Performance 2.3L EcoBoost N1 Long Block - Focus RS
Vendor:Mountune Racing EnginesRegular price From $9,539.10Regular priceUnit price / per$10,599.00Sale price From $9,539.10Sale -
mountune High Performance 2.3L EcoBoost Stroker N1 Long Block - Focus ST
Vendor:Mountune Racing EnginesRegular price $7,919.10Regular priceUnit price / per$8,799.00Sale price $7,919.10Sale
FEATURED ON:
Subscribe to our emails
Be the first to know about new collections and exclusive offers.