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Engine & Components / Engine Components / Valve Springs | Retainers & Locks
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Endurance Plus Dual Valve Springs with Damper (16) 1.550" OD ISK9315-PLUS
220LBS @1.900" Seat Pressure, 530LBS @ 1.240" Open Pressure, 1.130" Co
SKU: ISK9315-PLUSOriginal price $825.41 - Original price $825.41Original price $825.41$825.41$825.41 - $825.41Current price $825.41Only 2 left!Endurance Plus Dual Valve Springs with Damper (16) 1.550" OD220LBS @1.900" Seat Pressure, 530LBS @ 1.240" Open Pressure, 1.130" Coil BindISK9315-PL...
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Dual Valve Springs with Damper (Set) 1.530" OD ISK9005
185LBS @ 1.875" Seat Pressure, 465LBS @ 1.225" Open Pressure, 1.160" C
SKU: ISK9005Original price $582.90 - Original price $582.90Original price $582.90$582.90$582.90 - $582.90Current price $582.90in stockDual Valve Springs with Damper (Set) 1.530" OD185LBS @ 1.875" Seat Pressure, 465LBS @ 1.225" Open Pressure, 1.160" Coil BindISK9005K9005We make val...
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"SP" Series Dual Valve Springs with Damper (16) 1.530" OD ISK8205-SP
150LBS @ 1.900" Seat Pressure, 440LBS @ 1.300" Open Pressure, 1.150" C
SKU: ISK8205-SPOriginal price $570.18 - Original price $570.18Original price $570.18$570.18$570.18 - $570.18Current price $570.18Only 2 left!"SP" Series Dual Valve Springs with Damper (16) 1.530" OD150LBS @ 1.900" Seat Pressure, 440LBS @ 1.300" Open Pressure, 1.150" Coil BindISK8205-SPK8...
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Endurance Plus Dual Valve Springs with Damper (16) 1.530" OD ISK8205-PLUS
150LBS @1.900" Seat Pressure, 420LBS @ 1.300" Open Pressure, 1.120" Co
SKU: ISK8205-PLUSOriginal price $855.78 - Original price $855.78Original price $855.78$855.78$855.78 - $855.78Current price $855.78Only 3 left!Endurance Plus Dual Valve Springs with Damper (16) 1.530" OD150LBS @1.900" Seat Pressure, 420LBS @ 1.300" Open Pressure, 1.120" Coil BindISK8205-PL...
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Dual Valve Springs with Damper (Set) 1.530" OD ISK8205
140LBS @ 1.900" Seat Pressure, 430LBS @ 1.250" Open Pressure, 1.170" C
SKU: ISK8205Original price $560.69 - Original price $560.69Original price $560.69$560.69$560.69 - $560.69Current price $560.69Only 2 left!Dual Valve Springs with Damper (Set) 1.530" OD140LBS @ 1.900" Seat Pressure, 430LBS @ 1.250" Open Pressure, 1.170" Coil BindISK8205K8205We make val...
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"SP" Series Dual Valve Springs with Damper (16) 1.530" OD ISK8005SP
150LBS @ 1.875" Seat Pressure, 435LBS @ 1.225" Open Pressure, 1.160" C
SKU: ISK8005SPOriginal price $561.95 - Original price $561.95Original price $561.95$561.95$561.95 - $561.95Current price $561.95Only 1 left!"SP" Series Dual Valve Springs with Damper (16) 1.530" OD 150LBS @ 1.875" Seat Pressure, 435LBS @ 1.225" Open Pressure, 1.160" Coil Bind ISK8005SP ...
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Dual Valve Springs with Damper (Set) 1.530" OD ISK8005A
135LBS @ 1.875" Seat Pressure, 395LBS @ 1.225" Open Pressure, 1.160" C
SKU: ISK8005AOriginal price $489.24 - Original price $489.24Original price $489.24$489.24$489.24 - $489.24Current price $489.24in stockDual Valve Springs with Damper (Set) 1.530" OD135LBS @ 1.875" Seat Pressure, 395LBS @ 1.225" Open Pressure, 1.160" Coil BindISK8005AK8005AWe make v...
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Endurance Plus Dual Valve Springs with Damper (16) 1.530" OD ISK8005-PLUS
140LBS @1.875" Seat Pressure, 400LBS @ 1.275" Open Pressure, 1.160" Co
SKU: ISK8005-PLUSOriginal price $854.88 - Original price $854.88Original price $854.88$854.88$854.88 - $854.88Current price $854.88Only 2 left!Endurance Plus Dual Valve Springs with Damper (16) 1.530" OD140LBS @1.875" Seat Pressure, 400LBS @ 1.275" Open Pressure, 1.160" Coil BindISK8005-PL...
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"SP" Series Dual Valve Springs with Damper (16) 1.440" OD ISK6105-SP
145LBS @ 1.800" Seat Pressure, 365LBS @ 1.175" Open Pressure, 1.060" C
SKU: ISK6105-SPOriginal price $697.68 - Original price $697.68Original price $697.68$697.68$697.68 - $697.68Current price $697.68Out of stock"SP" Series Dual Valve Springs with Damper (16) 1.440" OD145LBS @ 1.800" Seat Pressure, 365LBS @ 1.175" Open Pressure, 1.060" Coil BindISK6105-SPK6...
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Dual Valve Springs with Damper (Set) 1.430" OD ISK6105
135LBS @ 1.812" Seat Pressure, 315LBS @ 1.260" Open Pressure, 1.120" C
SKU: ISK6105Original price $594.59 - Original price $594.59Original price $594.59$594.59$594.59 - $594.59Current price $594.59Only 2 left!Dual Valve Springs with Damper (Set) 1.430" OD135LBS @ 1.812" Seat Pressure, 315LBS @ 1.260" Open Pressure, 1.120" Coil BindISK6105K6105We make val...
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Chrome Moly Steel retainers 1.060" OD, .730" ID ISK607-STA
Suit 6005 & 8005-A Springs
SKU: ISK607-STAOriginal price $308.76 - Original price $308.76Original price $308.76$308.76$308.76 - $308.76Current price $308.76Only 2 left!Chrome Moly Steel retainers 1.060" OD, .730" IDSuit 6005 & 8005-A SpringsISK607-STAK607-STA- 4130 Chrome Moly Light Weight Steel Valve Spring R...
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Dual Valve Springs with Damper (Set) 1.430" OD ISK6005
135LBS @ 1.750" Seat Pressure, 285LBS @ 1.200" Open Pressure, 1.120" C
SKU: ISK6005Original price $578.51 - Original price $578.51Original price $578.51$578.51$578.51 - $578.51Current price $578.51Only 2 left!Dual Valve Springs with Damper (Set) 1.430" OD135LBS @ 1.750" Seat Pressure, 285LBS @ 1.200" Open Pressure, 1.120" Coil BindISK6005K6005We make val...
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Chrome Moly Steel retainers 1.080" OD, .735" ID (.060" Higher than 507-ST) ISK50
For 5005, 6005, 6105, 6205, 8005-A, 8305, 9005, 9105, 9265 Valve Sprin
SKU: ISK507-STAOriginal price $304.42 - Original price $304.42Original price $304.42$304.42$304.42 - $304.42Current price $304.42Only 2 left!Chrome Moly Steel retainers 1.080" OD, .735" ID (.060" Higher than 507-ST)For 5005, 6005, 6105, 6205, 8005-A, 8305, 9005, 9105, 9265 Valve SpringsI...
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Chrome Moly Steel retainers 1.080" OD, .735" ID ISK507-ST
For 5005, 6005, 6105, 6205, 8005-A, 8305, 9005, 9105, 9265 Valve Sprin
SKU: ISK507-STOriginal price $318.57 - Original price $318.57Original price $318.57$318.57$318.57 - $318.57Current price $318.57Only 3 left!Chrome Moly Steel retainers 1.080" OD, .735" IDFor 5005, 6005, 6105, 6205, 8005-A, 8305, 9005, 9105, 9265 Valve SpringsISK507-STK507-STIsky 4130 Ch...
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Titanium Retainers .886" OD ISK57-TI
For 235-D, 295-D Valve Springs
SKU: ISK57-TIOriginal price $422.04 - Original price $422.04Original price $422.04$422.04$422.04 - $422.04Current price $422.04in stockTitanium Retainers .886" ODFor 235-D, 295-D Valve SpringsISK57-TIK57-TIIsky Titanium retainers are 20-40% stronger than all other retainers. They a...
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Dual Valve Springs with Damper 1.240" OD ISK4205
130LBS @ 1.687" Seat Pressure, 290LBS @ 1.187" Open Pressure, 1.020" C
SKU: ISK4205Original price $618.02 - Original price $618.02Original price $618.02$618.02$618.02 - $618.02Current price $618.02Only 1 left!Dual Valve Springs with Damper 1.240" OD130LBS @ 1.687" Seat Pressure, 290LBS @ 1.187" Open Pressure, 1.020" Coil BindISK4205K4205We make valve spr...
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Chrome Moly Steel Retainers 1.065" OD, .730" ID (.060" Higher than 347-ST) ISK36
For 5005, 6005, 6105, 6205, 8005-A, 8305, 9005, 9105, 9625 Valve Sprin
SKU: ISK3607-STOriginal price $189.44 - Original price $189.44Original price $189.44$189.44$189.44 - $189.44Current price $189.44Out of stockChrome Moly Steel Retainers 1.065" OD, .730" ID (.060" Higher than 347-ST)For 5005, 6005, 6105, 6205, 8005-A, 8305, 9005, 9105, 9625 Valve SpringsI...
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Single Valve Spring With Dampner (Yellow) ISK3605-D
1.540" O.D, 110lbs @ 1.875 Closed, 300lbs @ 1.350 Open, 1.130" Coil Bi
SKU: ISK3605-DOriginal price $414.15 - Original price $414.15Original price $414.15$414.15$414.15 - $414.15Current price $414.15Only 2 left!Single Valve Spring With Dampner (Yellow)1.540" O.D, 110lbs @ 1.875 Closed, 300lbs @ 1.350 Open, 1.130" Coil Bind, .525" Max LiftISK3605-DK3605-DSp...
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Chrome Moly Steel Retainers 1.120" OD, .765" ID ISK275-ST
For 9205, 9275, 9315, 9365, 9365-SP, 9375/85 PLUS, 9385, 9425 Valve Sp
SKU: ISK275-STOriginal price $403.23 - Original price $403.23Original price $403.23$403.23$403.23 - $403.23Current price $403.23Only 2 left!Chrome Moly Steel Retainers 1.120" OD, .765" ID 275-ST ISK275-ST For 9205, 9275, 9315, 9365, 9365-SP, 9375/85 PLUS, 9385, 9425 Valve Springs MOLY R...
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Ultra-Rev Kit Machined Aluminium Rev Plate, Hard Coat Anodised ISK310-LRK
Suit SB Chevy, Roller Lifter Application 202-RH
SKU: ISK310-LRKOriginal price $433.73 - Original price $433.73Original price $433.73$433.73$433.73 - $433.73Current price $433.73Out of stockUltra-Rev Kit Machined Aluminium Rev Plate, Hard Coat AnodisedSuit SB Chevy, Roller Lifter Application 202-RHISK310-LRKK310-LRKThe "ULTRA REV-KIT" ...
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Outer Valve Spring with Damper 1.260" OD ISK235D
130LBS @ 1.750" Seat Pressure, 320LBS @ 1.200" Open Pressure, 1.150" C
SKU: ISK235DOriginal price $339.37 - Original price $339.37Original price $339.37$339.37$339.37 - $339.37Current price $339.37Only 3 left!Outer Valve Spring with Damper 1.260" OD130LBS @ 1.750" Seat Pressure, 320LBS @ 1.200" Open Pressure, 1.150" Coil Bind.ISK235DK235DWe make Valve Sp...
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Camshaft & Complete Kit suit Ford Mercury 21-A 1932-48 Flathead ISK204000
F85-02 Lifters, 4005 Dual Valve Springs, #404 Spring Shims, 87-F Retai
SKU: ISK204000Original price $2,528.63 - Original price $2,528.63Original price $2,528.63$2,528.63$2,528.63 - $2,528.63Current price $2,528.63Out of stockCamshaft & Complete Kit suit Ford Mercury 21-A 1932-48 FlatheadF85-02 Lifters, 4005 Dual Valve Springs, #404 Spring Shims, 87-F RetainersISK204...
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Single Valve Springs (Set) ISK185G
Suit Ford V8 Flathead 1932-53, 1.010"O.D
SKU: ISK185GOriginal price $274.81 - Original price $274.81Original price $274.81$274.81$274.81 - $274.81Current price $274.81Only 2 left!Single Valve Springs (Set)Suit Ford V8 Flathead 1932-53, 1.010"O.DISK185GK185GWe make Valve Springs to cover all applications, from street to all-o...
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Chrome Moly Steel Retainers .725" Inner Sep, 1.105" Outter Step ISK175-ST
Suit 8005-A, 8205, 8305, 9005, 9265 Valve Springs
SKU: ISK175-STOriginal price $373.42 - Original price $373.42Original price $373.42$373.42$373.42 - $373.42Current price $373.42Only 1 left!Chrome Moly Steel Retainers .725" Inner Sep, 1.105" Outter StepSuit 8005-A, 8205, 8305, 9005, 9265 Valve SpringsISK175-STK175-STIsky 4130 Chrome Mo...
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