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Manley valve spring and retainer kit for Mitsubishi EVO X (4B11T) supplies matched chrome-silicon alloy springs and titanium retainers (where specified) to ready the valvetrain for aggressive cam profiles. Rated for high-RPM durability, the kit supports up to 0.430" max lift and is built to provide fatigue resistance, consistent valve control, and compatibility with aftermarket camshafts in EVO X applications.
Manley Mitsubishi EVO X (4B11T) Valve Spring and Retainer Kit (w/o Valve Locks) (16 each)
