Manley Performance Valve spring and Retainer Kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and racing applications, these chrome-silicon alloy springs provide exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control at extreme RPMs. Save time and money with these kits, featuring premium springs, retainers, designed to handle aggressive aftermarket camshafts.
Features
- Includes matched Valve Springs, Retainers, and Locks (if part number ends in "K"). Spring Locators included in some applications.
- Designed to handle aftermarket camshafts and up to 10,000 RPM
- Heat treated aerospace grade titanium retainers CNC machined to exacting tolerances
- Includes 7 Machined Valve Locks manufactured from the premium quality heat treated steel
Specs
- Max Lift: 0.510"
- Spring: 22185-16
- Titanium Retainer: 23185-16
- Manley Sport Compatct Valve Spring and Retainer Kit
- Valve Spring Quantity: 16
- Valve Spring Coil Bind Height: 0.860
- Valve Spring Rate: 330
- Valve Lift - Stock: 0.370
- Valve Lift - Maximum: 0.510
- Installed Pressure and Height: 95 @ 1.420
- Open Pressure and Height: 264 @ 0.910
- Valve Spring Retainer Step Height: 0.095
- Valve Lock Angle: 6
- Industry: Automotive
- Out of Stock Message: Call for Availability
- Title: Manley Valve Spring & Retainer Kit - Subaru WRX/STI - Valve Locks NOT Included
- Prop 65 Yes/No: Yes
- Prop 65 (C, R or CR): CR
- Prop 65 - Short Label: Prop 65 Warning Label.JPG
- Engine Type: ICE
- Make: Subaru
- Engine: EJ20 / EJ25
- Product Market: Sport Compact
- Stem Diameter: 6.00
- Valve Stem Diameter: 6.00
