EJ20/25 Sleeved Block

Transform your Subaru EJ engine into a high-performance powerhouse with our premium Sleeved Block Service. Customer must supply core block. Please read our shipping instructions on the bottom of any of our web pages. 

Our meticulous process begins with thorough thermal cleaning, meticulously performed by our expert technicians in multiple phases. This guarantees a pristine foundation for your engine's upgrade.

With over 30 years of combined experience in high-performance block sleeving, our team leverages state-of-the-art technology, including our precision 5-Axis Centroid CNC machine, to craft a sleeved block that's second to none. This ensures precision and accuracy throughout the machining process, resulting in a block that's optimized for top-tier performance.

Line Boring and pinning is HIGHLY recommended with sleeve service, this is the only way to correct main bore issues and prevent crankcase shift. 

Our comprehensive service package includes flange top sleeves, precision machining, expert installation, and a surface finish that's as smooth as it gets. For those seeking the ultimate engine overhaul, we offer additional options such as cylinder boring, a final hone for optimal ring seal, and O-ring services to further enhance performance and durability.