Expected Lead Time: 5-6 Weeks
Contact Us for Pricing
The CJM Components Unlimited Valve Spring Kit with Titanium Retainers for Subaru EJ engines is engineered using materials and manufacturing practices on par with those used by leading teams in Formula 1, WRC, NASCAR, and NHRA. Each spring is wound from premium, motorsport-grade materials that are meticulously sourced to ensure an exceptionally clean grain structure, free from inclusions or defects that could affect long-term durability.
Every spring undergoes advanced processing and end-coil treatments identical to those used in top-tier racing programs. These processes relieve internal stresses created during winding, improve load-loss resistance, and maximize endurance under extreme temperature and RPM conditions.
CJM Components further advances performance by independently optimizing intake and exhaust spring rates and seat pressures, rather than relying on a single-rate setup. This results in:
Improved valve-seat life through precisely controlled closing forces
Reduced parasitic loss in the timing system, increasing usable horsepower
Lower wear across the entire valvetrain with exceptional stability at high engine speeds
These springs have also been carefully optimized for very high lift camshafts and elevated RPM ranges, maintaining precise valve control even under extreme loads. The dual, counter-wound spring configuration ensures excellent harmonic control and minimizes oscillations of the spring itself at the higher frequencies.
Combined with the precision-engineered titanium retainers, the Unlimited Valve Spring Kit delivers race-level control, endurance, and valvetrain stability for demanding EJ applications.
Features of the CJM Closed Deck Block
Highlight key qualities of the product, such as the materials, ingredients, or components used. Emphasize durability, reliability, or performance in everyday use.
Draw attention to the care and craftsmanship that went into its design and development, setting it apart in terms of quality and attention to detail.
Add a tagline
Achieve superior engine cooling with our advanced CJM closed deck insert, designed with a radial cooling jacket and coolant pass thru holes.
Highlight key qualities of the product, such as the materials, ingredients, or components used. Emphasize durability, reliability, or performance in everyday use.
Draw attention to the care and craftsmanship that went into its design and development, setting it apart in terms of quality and attention to detail.
