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NexTek H.P. Valve Springs
  • 5.7/6.1L HEMI
  • 1.311'' O.D.
  • 0.650'' I.D.
  • 353 lbs./in. Spring Rate
  • 145 @ 1.811'' Installed
  • 370 @ 1.161'' Open
  • 0.650'' Max Valve Lift
  • 1.100'' Coil Bind
  • Single Conical Ovate Wire
  • 16/pkg.
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    $332.99
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    $574.99
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    NexTek H.P. Valve Springs
  • 4.6/5.4L DOHC 4V
  • 1.126'' O.D.
  • 0.640'' I.D.
  • 330 lbs./in. Spring Rate
  • 95 @ 1.420'' Installed
  • 270 @ 0.895'' Open
  • 0.525'' Max Valve Lift
  • 0.860'' Coil Bind
  • Single Conical Ovate Wire
  • 32/pkg.
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    $574.99
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    $272.99
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    NexTek H.P. Valve Springs
  • GM LS-series
  • 1.295'' O.D.
  • 0.676'' I.D.
  • 379 lbs./in. Spring Rate
  • 155 @ 1.810'' Installed
  • 405 @ 1.150'' Open
  • 0.660'' Max Valve Lift
  • 1.100'' Coil Bind
  • Double Spring (No Damper)
  • 16/pkg.
  • View Details
    $272.99
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    $334.99
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    NexTek H.P. Valve Springs
  • GM LS-series
  • 1.311'' O.D.
  • 0.650'' I.D.
  • 353 lbs./in. Spring Rate
  • 150 @ 1.800'' Installed
  • 375 @ 1.150'' Open
  • 0.650'' Max Valve Lift
  • 1.100'' Coil Bind
  • Single Conical Ovate Wire
  • 16/pkg.
  • View Details
    $334.99
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    $396.99
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    NexTek H.P. Valve Springs
  • GM LS-series
  • 1.340'' O.D.
  • 0.726'' I.D.
  • 394 lbs./in. Spring Rate
  • 170 @ 1.810'' Installed
  • 450 @ 1.110'' Open
  • 0.700'' Max Valve Lift
  • 1.050'' Coil Bind
  • Double Spring (No Damper)
  • 16/pkg.
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    $396.99
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    $424.99
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    NexTek H.P. Valve Spring Kit
  • GM LS-series
  • 1.295'' O.D.
  • 0.676'' I.D.
  • 379 lbs./in. Spring Rate
  • 155 @ 1.810'' / 405 @ 1.150''
  • 0.560'' Max Valve Lift
  • Double Spring (No Damper)
  • Standard 7° Titanium Retainer
  • Viton Valve Seals
  • View Details
    $424.99
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    $312.99
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    NexTek H.P. Valve Springs
  • 4.6/5.4L SOHC 2V
  • 1.125'' O.D.
  • 0.642'' I.D.
  • 264 lbs./in. Spring Rate
  • 95 @ 1.680'' Installed
  • 240 @ 1.130'' Open
  • 0.580'' Max Valve Lift
  • 1.080'' Coil Bind
  • Single Conical Ovate Wire
  • 16/pkg.
  • View Details
    $312.99
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    $30.99
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    NexTek H.P. Valve Spring
  • 6.4L HEMI
  • 1.311'' O.D.
  • 0.650'' I.D.
  • 353 lbs./in. Spring Rate
  • 145 @ 1.811'' Installed
  • 380 @ 1.150'' Open
  • 0.650'' Max Valve Lift
  • 1.100'' Coil Bind
  • Single Conical Ovate Wire
  • 1/pkg.
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    $30.99
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    $402.99
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    NexTek H.P. Valve Springs
  • GM LS-series
  • 1.324'' O.D.
  • 0.676'' I.D.
  • 435 lbs./in. Spring Rate
  • 165 @ 1.800'' Installed
  • 515 @ 1.000'' Open
  • 0.800'' Max Valve Lift
  • 0.900'' Coil Bind
  • Double Spring (No Damper)
  • 16/pkg.
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    $402.99
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    $514.99
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    NexTek H.P. Valve Springs
  • 5.0L Coyote DOHC 4V
  • 1.101'' O.D.
  • 0.650'' I.D.
  • 258 lbs./in. Spring Rate
  • 120 @ 1.640'' Installed
  • 275 @ 1.040'' Open
  • 0.600'' Max Valve Lift
  • 0.970'' Coil Bind
  • Single Conical Ovate Wire
  • 32/pkg.
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    $514.99
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    $23.99
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    NexTek H.P. Valve Spring
  • GM LS-series
  • 1.311'' O.D.
  • 0.650'' I.D.
  • 353 lbs./in. Spring Rate
  • 150 @ 1.800'' Installed
  • 375 @ 1.150'' Open
  • 0.650'' Max Valve Lift
  • 1.100'' Coil Bind
  • Single Conical Ovate Wire
  • 1/pkg.
  • View Details
    $23.99
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    $339.99
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    NexTek H.P. Valve Springs
  • HEMI Drag Pak
  • 1.311'' O.D.
  • 0.650'' I.D.
  • 353 lbs./in. Spring Rate
  • 145 @ 1.811'' Installed
  • 370 @ 1.161'' Open
  • 0.650'' Max Valve Lift
  • 1.100'' Coil Bind
  • Single Conical Ovate Wire
  • 16/pkg.
  • View Details
    $339.99
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    $502.99
    Ships directly from the manufacturer on 09/30/20
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    NexTek H.P. Valve Spring Kit
  • GM LS-series
  • 1.311'' O.D.
  • 0.650'' I.D.
  • 353 lbs./in. Spring Rate
  • 150 @ 1.800'' / 375 @ 1.150''
  • 0.600'' Max Valve Lift
  • Single Conical Ovate Wire
  • Standard 7° Steel Retainer
  • Viton Valve Seals
  • View Details
    $502.99
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    $432.99
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    NexTek H.P. Valve Spring Kit
  • GM LS-series
  • 1.295'' O.D.
  • 0.676'' I.D.
  • 379 lbs./in. Spring Rate
  • 155 @ 1.810'' / 405 @ 1.150''
  • 0.660'' Max Valve Lift
  • Double Spring (No Damper)
  • 7° Titanium Retainer
  • Viton Valve Seals
  • View Details
    $432.99
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    $364.99
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    NexTek H.P. Double Valve Spring Kit
  • GM Gen V LT4
  • 1.295 in. O.D.
  • 0.676 in. I.D.
  • 379 lbs.-in. Spring Rate
  • 155 @ 1.810 / 405 @ 1.150 in.
  • 0.660 in. Max Lift
  • 7 Degree Titanium Retainer
  • Viton Valve Seals
  • View Details
    $364.99
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    $392.99
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    NexTek H.P. Valve Springs
  • 4.6/5.4L SOHC 3V
  • 1.101'' O.D.
  • 0.650'' I.D.
  • 258 lbs./in. Spring Rate
  • 110 @ 1.670'' Installed
  • 260 @ 1.090'' Open
  • 0.580'' Max Valve Lift
  • 1.020'' Coil Bind
  • Single Conical Ovate Wire
  • 24/pkg
  • View Details
    $392.99
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    $379.99
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    NexTek H.P. Valve Springs
  • 6.4L HEMI
  • 1.311'' O.D.
  • 0.650'' I.D.
  • 353 lbs./in. Spring Rate
  • 145 @ 1.811'' Installed
  • 380 @ 1.150'' Open
  • 0.650'' Max Valve Lift
  • 1.100'' Coil Bind
  • Single Conical Ovate Wire
  • 16/pkg.
  • View Details
    $379.99
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    $274.99
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    NexTek H.P. Valve Springs
  • GM LS-series
  • 1.311'' O.D.
  • 0.650'' I.D.
  • 341 lbs./in. Spring Rate
  • 150 @ 1.800'' Installed
  • 355 @ 1.200'' Open
  • 0.600'' Max Valve Lift
  • 1.085'' Coil Bind
  • Single Conical Ovate Wire
  • 16/pkg.
  • View Details
    $274.99
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    $27.99
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    NexTek H.P. Valve Spring
  • 4.6/5.4L SOHC 2V
  • 1.175'' O.D.
  • 0.642'' I.D.
  • 255 lbs./in. Spring Rate
  • 125 @ 1.680'' Installed
  • 265 @ 1.130'' Open
  • 0.580'' Max Valve Lift
  • 1.080'' Coil Bind
  • Single Conical Ovate Wire
  • 1/pkg.
  • View Details
    $27.99
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    $21.99
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    NexTek H.P. Valve Spring
  • 4.6/5.4L DOHC 4V
  • 1.126'' O.D.
  • 0.640'' I.D.
  • 330 lbs./in. Spring Rate
  • 95 @ 1.420'' Installed
  • 270 @ 0.895'' Open
  • 0.525'' Max Valve Lift
  • 0.860'' Coil Bind
  • Single Conical Ovate Wire
  • 1/pkg.
  • View Details
    $21.99
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    $339.99
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    NexTek H.P. Valve Springs
  • 4.6/5.4L SOHC 2V
  • 1.175'' O.D.
  • 0.642'' I.D.
  • 255 lbs./in. Spring Rate
  • 125 @ 1.680'' Installed
  • 265 @ 1.130'' Open
  • 0.580'' Max Valve Lift
  • 1.080'' Coil Bind
  • Single Conical Ovate Wire
  • 16/pkg.
  • View Details
    $339.99
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    $31.99
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    NexTek H.P. Valve Spring
  • GM LS-series
  • 1.340'' O.D.
  • 0.726'' I.D.
  • 394 lbs./in. Spring Rate
  • 170 @ 1.810'' Installed
  • 450 @ 1.110'' Open
  • 0.700'' Max Valve Lift
  • 1.050'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • View Details
    $31.99
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    $27.99
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    NexTek H.P. Valve Spring
  • GM LS-series
  • 1.324'' O.D.
  • 0.676'' I.D.
  • 435 lbs./in. Spring Rate
  • 165 @ 1.800'' Installed
  • 515 @ 1.000'' Open
  • 0.800'' Max Valve Lift
  • 0.900'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • View Details
    $27.99
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    $21.99
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    NexTek H.P. Valve Spring
  • 4.6/5.4L SOHC 2V
  • 1.125'' O.D.
  • 0.642'' I.D.
  • 264 lbs./in. Spring Rate
  • 95 @ 1.680'' Installed
  • 240 @ 1.130'' Open
  • 0.580'' Max Valve Lift
  • 1.080'' Coil Bind
  • Single Conical Ovate Wire
  • 1/pkg.
  • View Details
    $21.99
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    $656.99
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    NexTek H.P. Valve Springs
  • 5.0L Coyote DOHC 4V
  • 1.014'' O.D.
  • 0.533'' I.D.
  • 236 lbs./in. Spring Rate
  • 90 @ 1.570'' Installed
  • 225 @ 1.000'' Open
  • 0.570'' Max Valve Lift
  • 0.904'' Coil Bind
  • Single Conical Ovate Wire
  • 32/pkg.
  • View Details
    $656.99
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    $42.99
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    NexTek H.P. Valve Spring
  • GM LS-series
  • 1.335'' O.D.
  • 0.622'' I.D.
  • 780 lbs./in. Spring Rate
  • 270 @ 1.800'' Installed
  • 870 @ 1.020'' Open
  • 0.780'' Max Valve Lift
  • 0.960'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • View Details
    $42.99
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    $27.99
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    NexTek H.P. Valve Spring
  • HEMI Drag Pak
  • 1.311'' O.D.
  • 0.650'' I.D.
  • 353 lbs./in. Spring Rate
  • 145 @ 1.811'' Installed
  • 370 @ 1.161'' Open
  • 0.650'' Max Valve Lift
  • 1.100'' Coil Bind
  • Single Conical Ovate Wire
  • 1/pkg.
  • View Details
    $27.99
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    $26.99
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    NexTek H.P. Valve Spring
  • 5.7/6.1L HEMI
  • 1.311'' O.D.
  • 0.650'' I.D.
  • 353 lbs./in. Spring Rate
  • 145 @ 1.811'' Installed
  • 370 @ 1.161'' Open
  • 0.650'' Max Valve Lift
  • 1.100'' Coil Bind
  • Single Conical Ovate Wire
  • 1/pkg.
  • View Details
    $26.99
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    $22.99
    Ships directly from the manufacturer on 09/30/20
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    NexTek H.P. Valve Spring
  • GM LS-series
  • 1.295'' O.D.
  • 0.676'' I.D.
  • 379 lbs./in. Spring Rate
  • 155 @ 1.810'' Installed
  • 405 @ 1.150'' Open
  • 0.660'' Max Valve Lift
  • 1.100'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • View Details
    $22.99
    Ships directly from the manufacturer on 09/30/20
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    $596.99
    Ships directly from the manufacturer on 09/30/20
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    NexTek H.P. Double Valve Spring Kit
  • GM Gen V LT4
  • 1.340 in. O.D.
  • 0.726 in. I.D.
  • 394 lbs.-in. Spring Rate
  • 170 @ 1.810 / 450 @ 1.110 in.
  • 0.700 in. Max Lift
  • 7 Degree Titanium Retainer
  • Viton Valve Seals
  • View Details
    $596.99
    Ships directly from the manufacturer on 09/30/20
    FREE Shipping
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