Better By Design
Manley NexTek (Next Generation) Valve Springs were developed over a decade ago and still offer unequaled performance. These durable springs are able to satisfy the demands of top-level engine builders who need the absolute highest-quality valve springs available. Manley Nextek springs can be found in drag race applications ranging from Bracket racers to Top Fuel, oval track engines across the country, and muscle cars on the street and strip.
Features:
- Manufactured from HiTensile Chrome Silicon steel
- Shotpeened to MIL Specs for maximum fatigue life
- Proprietary multi-step heat treating minimizes load loss
- Tightly controlled open end flatness reduces valve stem side loading
- Tip thickness designed to eliminate overload breakage
- Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities
- Available in Polished and Super Finished versions to reduce friction, improve fatigue life and minimize load loss
- Super Finished is a multi-step surface enhancement that significantly improves fatigue strength
Click Here to see Valve Springs Load Chart
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GM LS-Series
$21.99
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NexTek H.P. Valve SpringGM 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 1/pkg.
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$21.99
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$277.99
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NexTek H.P. Valve SpringsGM 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.
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$277.99
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$26.99
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NexTek H.P. Valve SpringGM 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.
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$26.99
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$338.99
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NexTek H.P. Valve SpringsGM 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.
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$338.99
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$21.99
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NexTek H.P. Valve SpringGM 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.
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$21.99
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$269.99
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NexTek H.P. Valve SpringsGM 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.
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$269.99
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$30.99
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NexTek H.P. Valve SpringGM 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.
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$30.99
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$400.99
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NexTek H.P. Valve SpringsGM 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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$400.99
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$27.99
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NexTek H.P. Valve SpringGM 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.
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$27.99
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$400.99
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NexTek H.P. Valve SpringsGM 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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$400.99
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$46.99
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NexTek H.P. Valve SpringGM 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.
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$46.99
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Manley 26361634KS
Manley Super Finished NexTek H.P. Valve Spring Kit 10 Degree H-13 Tool Steel Retainers GM LS
$562.99
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NexTek H.P. Valve Spring KitGM 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) 10° H-13 Tool Steel Retainer Viton Valve Seals
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$562.99
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Manley 26361734KLS
Manley Super Finished NexTek H.P. Valve Spring Kit 7 Degree Titanium Retainers GM LS
$424.99
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NexTek H.P. Valve Spring KitGM 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
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$424.99
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$373.99
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NexTek H.P. Valve Spring KitGM 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) +.050" 7° Steel Retainer Viton Valve Seals
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$373.99
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Manley 26362334KS
Manley Super Finished NexTek H.P. Valve Spring Kit 7 Degree Titanium Retainers GM LS
$424.99
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NexTek H.P. Valve Spring KitGM 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
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$424.99
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Manley 26380638KS
Manley Super Finished NexTek H.P. Valve Spring Kit 10 Degree H-13 Tool Steel Retainers GM LS-series
$620.99
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NexTek H.P. Valve Spring KitGM 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 10° H-13 Tool Steel Retainer Viton Valve Seals
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$620.99
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Manley 26382538KS
Manley Super Finished NexTek H.P. Valve Spring Kit 7 Degree Titanium Retainers GM LS-series
$539.99
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NexTek H.P. Valve Spring KitGM LS-series 1.311'' O.D. 0.650'' I.D. 353 lbs./in. Spring Rate 150 @ 1.800'' / 375 @ 1.150'' 0.650'' Max Valve Lift Single Conical Ovate Wire +.050" 7° Titanium Retainer Viton Valve Seals
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$539.99
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Manley 26382038KS
Manley Super Finished NexTek H.P. Valve Spring Kit 7 Degree Steel Retainers GM LS-series
$497.99
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NexTek H.P. Valve Spring KitGM 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
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$497.99
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GM Gen V LT4
$586.99
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NexTek H.P. Double Valve Spring KitGM 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
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$586.99
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$370.99
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NexTek H.P. Double Valve Spring KitGM 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
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$370.99
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$525.99
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NexTek H.P. Conical Valve Spring KitGM Gen V LT4 1.311 in. O.D. (Bottom) 0.885 in. I.D. (Bottom) 353 lbs.-in. Spring Rate 150 @ 1.800 / 350 @ 1.150 in. 0.650 in. Max Lift 7 Degree Titanium Retainer Viton Valve Seals
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$525.99
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Chrysler 5.7L/6.1L HEMI
$29.99
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NexTek H.P. Valve Spring5.7/6.1L 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.
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$29.99
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$376.99
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NexTek H.P. Valve Springs5.7/6.1L 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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$376.99
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$26.99
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NexTek H.P. Valve SpringHEMI 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.
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$26.99
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$336.99
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NexTek H.P. Valve SpringsHEMI 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.
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$336.99
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Chrysler 6.4L HEMI
$29.99
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NexTek H.P. Valve Spring6.4L 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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$29.99
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$376.99
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NexTek H.P. Valve Springs6.4L 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.
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$376.99
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Ford 4.6L/5.4L
$24.99
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NexTek H.P. Valve Spring4.6/5.4L 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.
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$24.99
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$316.99
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NexTek H.P. Valve Springs4.6/5.4L 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.
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$316.99
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$26.99
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NexTek H.P. Valve Spring4.6/5.4L 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.
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$26.99
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