Supertech Performance SPR-TS1015 Dual Valve Spring Chrome Silicon Vanadium

The Supertech Performance SPR-TS1015 is a high-performance dual valve spring engineered for demanding engine builds. Manufactured from premium Superclean Chrome Silicon Vanadium Steel Alloy, this spring delivers exceptional durability, superior fatigue resistance, and consistent pressure retention at high RPM — qualities that set it apart from standard OEM replacements.

Key Features:

• Dual-spring design with outer and inner coils for added stability and surge resistance
• Outer Spring OD: 27.50mm | Outer Spring ID: 20.00mm
• Inner Spring OD: 20.00mm | Inner Spring ID: 15.20mm
• Seat Pressure: 91 lbs @ 33.65mm
• Open Pressure: 224 lbs @ 11mm
• Maximum Lift: 12.90mm
• Coil Bind: 20.70mm
• Spring Rate: 12.10 mm
• Computer-designed geometry ensures wire stress levels remain within fatigue safety thresholds for long-term reliability under extreme conditions
• Engineered harmonic control minimizes valve float and spring surge at elevated engine speeds
• Superior material memory retention maintains consistent seat and open pressures over extended use

Sold individually — one (1) valve spring per unit. Order the quantity matching the total number of valves in your application (e.g., a 16-valve engine requires a quantity of 16).