Product Overview
High-performance dual valve spring kit for BMW M20 engines. Manufactured from premium Chrome Silicon steel with Chromoly retainers. Designed for reliable high-RPM operation in naturally aspirated applications.
Engine Applications
Fits: E21 3 Series · E28 5 Series · E30 3 Series (320i / 323i / 325e / 325i / 325is / 325iX) · E34 520i / 525i · Z1
Engine codes: M20B20, M20B23, M20B25, M20B27 (Eta), M20B27 Super Eta
What’s Included
- 12 × Inner Valve Springs
- 12 × Outer Valve Springs
- 12 × 7mm Chromoly Retainers
Technical Specifications
Seating Pressure 37mm 95lbs
Full Lift Pressure = 240lbs
Material Specifications
Valve Springs: Premium Chrome Silicon Steel
Retainers: 4130 Chromoly Steel – 7mm valve stem
Performance Rating: 8500rpm capability
Application
Designed for BMW M20 engines.
Installation Notes
Professional installation recommended. Verify spring heights and clearances.
