Product Overview
High-performance single valve spring kit manufactured from premium Chrome Silicon. Engineered for reliable high-RPM operation and motorsport applications. Eliminates valve float and maintains precise valve timing under extreme conditions.
Engine Applications
Fits: AE101 / AE111 Corolla · Levin / Trueno
Engine codes: 4AGE 20v
What’s Included
- 20 × Single Valve Springs
- 20 × Chromoly Retainers
Technical Specifications
Seating Pressure @ 34mm = 75lbs
Full Lift Pressure = 135lbs
Material Specifications
Valve Springs: Premium Chrome Silicon (CrSi) – Shot peened and heat treated for superior fatigue resistance
Retainers: 4130 Chromoly – Reduces inertia while ensuring long-term durability
Performance Rating: 8500 RPM capability
Lift Capacity: Up to 12mm camshaft lift
Application
Designed for naturally aspirated and turbocharged 4AGE 20v builds. Compatible with high-lift camshafts and performance builds.
Installation Notes
Professional installation recommended. Verify spring heights and valve travel to avoid coil bind.
