Supertech Performance SPRK-H100DR/BM-ST Dual Valve Spring Kit with Retainers

The Supertech Performance SPRK-H100DR/BM-ST is a high-performance dual valve spring kit designed for demanding motorsport applications. This precision-engineered kit features Supertech's premium Super Clean Chrome Silicon Vanadium steel alloy springs, computer-designed to ensure optimal harmonics under high RPM operation and extreme loads.

Key Features:

• Dual spring design for superior valve control at high RPM
• Premium Chrome Silicon Vanadium steel alloy construction for maximum durability
• Computer-optimized design controls wire stress levels and reduces fatigue
• Seat pressure: 67 lbs at 35.70mm installed height
• Maximum lift: 17.20mm with coil bind at 18.50mm
• Spring rate: 12.90 lbs/mm
• Includes matched retainers and seat locators for complete installation

This complete valve spring kit provides everything needed for a professional valvetrain upgrade. Each component is precision-matched to ensure proper harmonics and stress control under extreme racing conditions. Ideal for drag racing, road racing, and high-performance street applications where maximum engine RPM and reliability are critical.