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Dual Circle Track 1.580" OD, 1.060" ID Outer, 0.835" ID Inner, 248lbs@2.050" seat pressure, 640lbs@1.270" Open Pressure
PSI CT1540ML, Dual Valve Spring, OD 1.500 Inch, 610 Lbs.
Dual Circle Track 1.510" OD, 1.085" ID Outer, 0.790" ID Inner, 240lbs@2.030" seat pressure, 625lbs@1.250" Open Pressure
Dual Circle Track 1.580" OD, 1.160" ID Outer, 0.835" ID Inner, 248lbs@2.050" seat pressure, 640lbs@1.270" Open Pressure
PSI CT1572ML, Dual Valve Spring, 1.510 Inch, 650 Lbs.
Dual Circle Track 1.550" OD, 1.100" ID Outer, 0.775" ID Inner, 220lbs@2.030" seat pressure, 743lbs@1.250" Open Pressure
Dual Circle Track 1.510" OD, 1.085" ID Outer, 0.760" ID Inner, 180lbs@1.980" seat pressure, 680lbs@1.180" Open Pressure
This series has all the benefits of the 1200's plus an additional nitriding operation. PSI CT1575ML Dual Valve Spring, OD 1.400 Inch, 625 Lbs
Triple Drag Spring 1.660" OD, 1.195" ID Outer, 0.630" ID Inner, 340lbs@2.070" seat pressure, 940lbs@1.270" Open Pressure
Triple Drag Spring 1.660" OD, 1.195" ID Outer, 0.870" ID Inner, 375lbs@2.100" seat pressure, 1045lbs@1.200" Open Pressure
Triple Drag Spring 1.630" OD, 1.180" ID Outer, 0.870" ID Inner, 440lbs@2.200" seat pressure, 1200lbs@1.150" Open Pressure
Dual Drag Spring 1.520" OD, 1.070" ID Outer, 0.745" ID Inner, 350lbs@2.100" seat pressure, 1040lbs@1.200" Open Pressure
Triple Drag Spring 1.675" OD, 1.195" ID Outer, 0.630" ID Inner, 525lbs@2.300" seat pressure, 1330lbs@1.250" Open Pressure
Triple Drag Spring 1.710" OD, 1.210" ID Outer, 0.630" ID Inner, 515lbs@2.300" seat pressure, 1460lbs@1.250" Open Pressure
Triple Drag Spring 1.675" OD, 1.195" ID Outer, 0.630" ID Inner, 425lbs@2.400" seat pressure, 1355lbs@1.250" Open Pressure
Single Beehive LS1/LS6 Spring 1.290" OD, 0.630" ID Outer, 130lbs@1.800" seat pressure, 370lbs@1.175" Open Pressure
Dual LS1/LS6 Spring 1.275" OD, 0.935" ID Outer, 0.665" ID Inner, 130lbs@1.800" seat pressure, 395lbs@1.150" Open Pressure