Supertech Performance SPRK-H1005D-S14 Dual Valve Spring Titanium Retainer Kit

The Supertech Performance SPRK-H1005D-S14 is a precision-matched dual valve spring and titanium retainer kit engineered for complete high-performance valvetrain overhauls. This kit delivers a fully coordinated solution — springs, retainers, and seats — selected and matched to work together for maximum reliability and performance under demanding conditions.

Valve Springs (SPR-H1005D-S14):

Supertech valve springs are manufactured from premium Super Clean Chrome Silicon Vanadium Steel alloy, chosen for its exceptional strength and fatigue resistance at elevated RPMs. Each spring is computer-designed to ensure wire stress levels remain within defined fatigue limits for long-term durability under extreme operating conditions. Spring harmonics are precisely controlled through computer simulation to prevent valve float at high engine speeds.

Spring Specifications:

• Type: Dual (inner and outer) valve spring
• Seat Pressure: 90 lbs @ 35.5mm
• Open Pressure: 230 lbs @ 13.0mm
• Spring Rate: 11.50 lbs/mm
• Max Net Lift: 14.80mm
• Coil Bind: 21.50mm
• Outer Spring OD / ID: 29.65mm / 21.85mm
• Inner Spring OD / ID: 20.50mm / 15.50mm

Titanium Retainers (RET-BMS14/T1):

Retainers are CNC machined from military-certified titanium alloy for a precision fit, reduced valvetrain mass, and exceptional long-term durability. Lighter retainers reduce inertia at the top of the valve, improving high-RPM stability and reducing the risk of valve float.

Spring Seats (SEAT-H1002):

Precision spring seats are included to complete the valvetrain package, ensuring proper spring geometry and load distribution at the cylinder head interface.

Kit Contents:

• 16x Dual valve springs — SPR-H1005D-S14
• 16x Titanium retainers — RET-BMS14/T1
• 16x Spring seats — SEAT-H1002

Supertech Performance spring and retainer kits are precision-matched sets designed for a complete valvetrain overhaul, offering an industry-leading combination of performance, material quality, and value for the serious performance enthusiast.