QualFast .600" Max. Lift High Performance Springs

QualCast

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.

See listings below for specifications.

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Order No. Description Price Quantity
52-27270 Max Lift: 0.600" | OD: 1.460" | ID: 1.060" | Closed Load: 115 @ 1.820" | Open Load: 295 @ 1.250 | Spring Type: Single With Damper | Coil Bind: 1.150" | Use Retainers: 55-6302 $4.32
52-27410 Max Lift: 0.600" | OD: 1.460" | ID: 0.700" | Closed Load: 135 @ 1.850" | Open Load: 4205 @ 1.170 | Spring Type: Dual With Damper | Coil Bind: 1.170" | Use Retainers: 55-6302 $8.94
52-41010 Max Lift: 0.600" | OD: 1.539" | ID: 0.731" | Closed Load: 190 @ 1.940" | Open Load: 425 @ 1.370 | Spring Type: Dual With Damper | Coil Bind: 1.200" | Use Retainers: 55-6305 $10.86
52-46970 Max Lift: 0.600" | OD: 1.542" | ID: 1.128" | Closed Load: 150 @ 1.900" | Open Load: 332 @ 1.300 | Spring Type: Single With Damper | Coil Bind: 1.170" | Use Retainers: 55-6303 $5.88
52-49270 Max Lift: 0.600" | OD: 1.540" | ID: 1.140" | Closed Load: 100 @ 1.900" | Open Load: 240 @ 1.300 | Spring Type: Single With Damper | Coil Bind: 1.200" | Use Retainers: 55-6308 or 55-8308 $8.55
52-55710 Max Lift: 0.600" | OD: 1.437" | ID: 0.810" | Closed Load: 140 @ 1.800" | Open Load: 295 @ 1.300 | Spring Type: Dual | Coil Bind: 1.100" | Use Retainers: 55-6302 $4.72
52-57470 Max Lift: 0.600" | OD: 1.260" | ID: 0.876" | Closed Load: 125 @ 1.750" | Open Load: 330 @ 1.200 | Spring Type: Single With Damper | Coil Bind: 1.160" | Use Retainers: 55-6100 or 55-8100 $3.98
52-61270 Max Lift: 0.600" | OD: 1.260" | ID: 0.8760" | Closed Load: 130 @ 1.800" | Open Load: 350 @ 1.200 | Spring Type: Single With Damper | Coil Bind: 1.140" | Use Retainers: 55-6100 or 55-8100 $4.24
52-61810 Max Lift: 0.600" | OD: 1.460" | ID: 0.840" | Closed Load: 145 @ 1.800" | Open Load: 350 @ 1.200 | Spring Type: Dual | Coil Bind: 1.080" | Use Retainers: 55-6302 $8.40
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