EJ20/25 Sleeved Block rzr This design improvement ensures precise

This design improvement ensures precise alignment and optimal support

Starting with CNC-ported runners and combustion chambers

Made from aerospace grade

This is a product designed for those seeking the pinnacle of performance and are willing to push the limits of their engine

Designed with accessible air bleed valve for easy coolant installation

EJ20/25 Sleeved Block rzr This design improvement ensures preciseTransform 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