52-53410QualFast .590" Max. Lift High Performance Springs

QualFast High Performance Springs are manufactured by the industry-leading high performance valve spring factory using the latest materials and manufacturing processes. All QualFast springs are wound using super-clean chrome silicon or new Alpha 1 or 3 alloy wires. Engineered for high performance to give optimum lift and prevent valve float.

Specs

• OD : 1.437"
• ID : 0.796"
• Closed Load : 165 @ 1.800"
• Open Load : 315 @ 1.300"
• Spring Type : Dual
• Coil Bind : 1.100