Ferrea E11052-1 Titanium Valve Spring Retainer for Mitsubishi 4G63

The Ferrea E11052-1 is a precision-engineered titanium valve spring retainer designed for high-performance Mitsubishi 4G63 engines found in Lancer Evolution models. This Pro CNC Series retainer is machined from aerospace-quality titanium alloy and fully heat-treated to exact tolerances, delivering exceptional strength and durability for demanding racing applications.

Key Features:

• Precision CNC-machined from aerospace-grade titanium alloy
• 40% weight reduction compared to conventional steel retainers
• Fully heat-treated and finished to exact tolerances
• Designed for use with Ferrea valve spring S10084 and spring seat locator SL1041
• Engineered for high-RPM racing and performance applications
• Reduces valvetrain mass for improved engine response and higher rev capability

This single titanium retainer is part of Ferrea's professional-grade valvetrain component lineup, trusted by engine builders and racers worldwide. The lightweight titanium construction reduces reciprocating mass in the valvetrain, allowing for higher engine speeds and more aggressive camshaft profiles while maintaining valvetrain stability and control.