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PSI CT1242, Dual Valve Spring, OD 1.580in, 513lb PSI PSI CT1242 : Valve Spring, Circle Track Series, Dual Spring, 503 lb/in Spring Rate, 1.200" Coil Bind, 1.580" OD, Set of 16

Dual Circle Track 1.580" OD, 1.060" ID Outer, 0.835" ID Inner, 248lbs@2.050" seat pressure, 640lbs@1.270" Open Pressure

Regular Price: $359.99
PSI CT1541ML, Dual Valve Spring, OD 1.510, 494lb PSI PSI CT1541ML : Valve Spring, Circle Track Series, Dual Spring, 494 lb/in Spring Rate, 1.180" Coil Bind, 1.510" OD, Set of 16

Dual Circle Track 1.510" OD, 1.085" ID Outer, 0.790" ID Inner, 240lbs@2.030" seat pressure, 625lbs@1.250" Open Pressure

Regular Price: $539.99
PSI CT1542ML, Dual Valve Spring, OD 1.580, 513lb PSI PSI CT1542ML : Valve Spring, Circle Track Series, Dual Spring, 503 lb/in Spring Rate, 1.200" Coil Bind, 1.580" OD, Set of 16

Dual Circle Track 1.580" OD, 1.160" ID Outer, 0.835" ID Inner, 248lbs@2.050" seat pressure, 640lbs@1.270" Open Pressure

Regular Price: $539.99
PSI CT1573ML, Dual Valve Spring, OD 4.550, 671lb PSI PSI CT1573ML : Valve Spring, Circle Track Series, Dual Spring, 671 lb/in Spring Rate, 1.180" Coil Bind, 1.550" OD, Set of 16

Dual Circle Track 1.550" OD, 1.100" ID Outer, 0.775" ID Inner, 220lbs@2.030" seat pressure, 743lbs@1.250" Open Pressure

Regular Price: $539.99
PSI CT1574ML, Dual Valve Spring, OD 1.510, 625lb PSI PSI CT1574ML : Valve Spring, Circle Track Series, Dual Spring, 625 lb/in Spring Rate, 1.110" Coil Bind, 1.510" OD, Set of 16

Dual Circle Track 1.510" OD, 1.085" ID Outer, 0.760" ID Inner, 180lbs@1.980" seat pressure, 680lbs@1.180" Open Pressure

Regular Price: $539.99
PSI CT1575ML Dual Valve Spring, OD 1.400 Inch, 625 Lbs PSI CT1575ML : Valve Spring, Circle Track Series, Dual Spring, 559 lb/in Spring Rate, 1.100" Coil Bind, 1.400" OD, Set of 16

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

Regular Price: $524.99
PSI DR1247, Triple Valve Spring, OD 1.660, 750lb PSI PSI DR1247 : Valve Spring, Drag Race Series, Triple Spring, 750 lb/in Spring Rate, 1.130" Coil Bind, 1.660" OD, Set of 16

Triple Drag Spring 1.660" OD, 1.195" ID Outer, 0.630" ID Inner, 340lbs@2.070" seat pressure, 940lbs@1.270" Open Pressure

Regular Price: $359.99
PSI DR1248, Triple Valve Spring, OD 1.660, 744lb PSI PSI DR1248 : Valve Spring, Drag Race Series, Triple Spring, 744 lb/in Spring Rate, 1.130" Coil Bind, 1.660" OD, Set of 16

Triple Drag Spring 1.660" OD, 1.195" ID Outer, 0.870" ID Inner, 375lbs@2.100" seat pressure, 1045lbs@1.200" Open Pressure

Regular Price: $359.99
PSI DR1253RML, Triple Valve Spring, OD 1.630, 724lb PSI PSI DR1253RML : Valve Spring, Drag Race Series, Triple Spring, 724 lb/in Spring Rate, 1.080" Coil Bind, 1.630" OD, Set of 16

Triple Drag Spring 1.630" OD, 1.180" ID Outer, 0.870" ID Inner, 440lbs@2.200" seat pressure, 1200lbs@1.150" Open Pressure

Regular Price: $507.99
PSI DR1254RML, Dual Valve Spring, OD 1.520, 767lb PSI PSI DR1254RML : Valve Spring, Drag Race Series, Dual Spring, 767 lb/in Spring Rate, 1.140" Coil Bind, 1.520" OD, Set of 16

Dual Drag Spring 1.520" OD, 1.070" ID Outer, 0.745" ID Inner, 350lbs@2.100" seat pressure, 1040lbs@1.200" Open Pressure

Regular Price: $549.99
PSI DR1261RML, Triple Valve Spring, OD 1.675, 767lb PSI PSI DR1261RML : Valve Spring, Drag Race Series, Triple Spring, 790 lb/in Spring Rate, 1.140" Coil Bind, 1.675" OD, Set of 16

Triple Drag Spring 1.675" OD, 1.195" ID Outer, 0.630" ID Inner, 525lbs@2.300" seat pressure, 1330lbs@1.250" Open Pressure

Regular Price: $521.99
PSI DR1262RML, Triple Valve Spring, OD 1.710, 900lb PSI PSI DR1262RML : Valve Spring, Drag Race Series, Triple Spring, 900 lb/in Spring Rate, 1.140" Coil Bind, 1.710" OD, Set of 16

Triple Drag Spring 1.710" OD, 1.210" ID Outer, 0.630" ID Inner, 515lbs@2.300" seat pressure, 1460lbs@1.250" Open Pressure

Regular Price: $524.99
PSI DR1263RML, Triple Valve Spring, OD 1.675, 809lb PSI PSI DR1263RML : Valve Spring, Drag Race Series, Triple Spring, 809 lb/in Spring Rate, 1.100" Coil Bind, 1.675" OD, Set of 16

Triple Drag Spring 1.675" OD, 1.195" ID Outer, 0.630" ID Inner, 425lbs@2.400" seat pressure, 1355lbs@1.250" Open Pressure

Regular Price: $524.99
PSI LS1511ML-16, Beehive Valve Spring, OD 1.290, 380lb PSI PSI LS1511ML : Valve Spring, LS Series, Beehive Spring, 384 lb/in Spring Rate, 1.100" Coil Bind, 1.290" OD, Set of 16

Single Beehive LS1/LS6 Spring 1.290" OD, 0.630" ID Outer, 130lbs@1.800" seat pressure, 370lbs@1.175" Open Pressure

Regular Price: $304.00
PSI LS1512ML, Dual Valve Spring, OD 1.275, 408lb PSI PSI LS1512ML : Valve Spring, LS Series, Dual Spring, 408 lb/in Spring Rate, 1.070" Coil Bind, 1.275" OD, Set of 16

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

Regular Price: $374.99
   
 
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