Supertech Performance SPR-V2091-4 Dual Valve Spring Chrome Silicon Vanadium

The Supertech Performance SPR-V2091-4 is a high-performance dual valve spring engineered for demanding, high-RPM engine applications. Constructed from premium Superclean Chrome Silicon Vanadium Steel alloy, this spring delivers exceptional fatigue resistance, improved spring memory, and long-term durability under extreme operating conditions.

Each spring is computer-designed to maintain wire stress levels within safe fatigue limits while keeping harmonics tightly controlled — critical factors for valvetrain stability at elevated engine speeds. The result is a valve spring that resists float, maintains consistent seat and open pressures, and withstands the rigors of performance street and motorsport use.

Key Specifications:

• Type: Dual Valve Spring
• Spring Rate: 12.5 N/mm
• Seat Pressure: 80 lbs @ 33mm
• Open Pressure: 192 lbs @ 10mm
• Max Lift: 14.00mm
• Coil Bind: 18.70mm
• Inner Spring ID: 16.50mm
• Inner Spring OD: 21.90mm
• Outer Spring ID: 23.20mm
• Material: Superclean Chrome Silicon Vanadium Steel Alloy

Sold individually — one (1) valve spring per unit. Order the quantity matching the total number of valve springs required for your engine build (e.g., quantity of 8 for an 8-valve engine, quantity of 16 for a 16-valve engine).