Brian Crower Spring & Retainer Kit for Mitsubishi 4G63 Eclipse/Evo Single Spr...

Brian Crower Spring & Titanium Retainer Kit for Mitsubishi 4G63 (Eclipse / Evo) Upgrade valve train performance with this precision-engineered spring and titanium retainer kit from Brian Crower. Designed specifically for the Mitsubishi 4G63 engine found in Eclipse and Evo models, the kit delivers improved valve control, reduced reciprocating mass, and reliable high-rpm stability for street, strip, and track use. Application: Mitsubishi 4G63 (Eclipse / Evo) Includes: High-performance valve springs and lightweight titanium retainers Benefits: Increased spring pressure capacity, reduced valve float, faster valve response, improved horsepower potential Material: Premium spring steel and aerospace-grade titanium for durability and weight savings Fitment: Direct fit for stock heads with performance cams; ideal for mild to extreme builds Brian Crower kits are engineered and tested to exacting standards to ensure consistent seat pressure, coil bind clearance, and long-term reliability. Whether building a high-revving race motor or upgrading a performance street engine, this kit provides the precision and strength your 4G63 needs.