52-58310 | QualFast .700" 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

• Max Lift : 0.700"
• OD : 1.540"
• ID : 0.729"
• Closed Load : 255 @ 1.950"
• Open Load : 590 @ 1.230"
• Spring Type : Dual with Damper
• Coil Bind : 1.190