Ferrea E20055-1 Single Spring 7 Degree Pro CNC Tool Steel Valve Retainer

The Ferrea E20055-1 is a high-performance tool steel valve spring retainer designed for Subaru FA20 and Toyota 4U-GSE engines. This individual retainer is precision CNC-machined to exact specifications for single spring valvetrain applications with a 7-degree profile.

Key Features:

• Precision CNC-machined from high-quality tool steel for superior strength and durability
• 7-degree profile optimized for single spring applications
• Designed specifically for Subaru FA20 engines (2012+ BRZ/FR-S) and Toyota 4U-GSE engines
• Engineered to handle high RPM operation and aggressive camshaft profiles
• Sold individually for replacement or custom builds

Ferrea has been manufacturing superior racing valvetrain components for over 50 years, with proven performance in Formula 1, Indy Car, NASCAR, and drag racing. These retainers are developed using advanced FEA and CAD software, plus rigorous compressive load testing to ensure maximum reliability in demanding high-performance applications.