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Engine & Components / Engine Components / Valve Springs | Retainers & Locks
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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 $470.94 - Original price $470.94Original price $470.94$470.94$470.94 - $470.94Current price $470.94Only 3 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 $472.58 - Original price $472.58Original price $472.58$472.58$472.58 - $472.58Current price $472.58Only 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 $405.19 - Original price $405.19Original price $405.19$405.19$405.19 - $405.19Current price $405.19in 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 $588.80 - Original price $588.80Original price $588.80$588.80$588.80 - $588.80Current price $588.80Out of stockEndurance 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 $594.19 - Original price $594.19Original price $594.19$594.19$594.19 - $594.19Current price $594.19Only 1 left!"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 $484.74 - Original price $484.74Original price $484.74$484.74$484.74 - $484.74Current price $484.74Only 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 $136.46 - Original price $136.46Original price $136.46$136.46$136.46 - $136.46Current price $136.46Only 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 $485.73 - Original price $485.73Original price $485.73$485.73$485.73 - $485.73Current price $485.73Only 3 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 $250.31 - Original price $250.31Original price $250.31$250.31$250.31 - $250.31Current price $250.31Only 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 $250.19 - Original price $250.19Original price $250.19$250.19$250.19 - $250.19Current price $250.19Only 1 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 $354.12 - Original price $354.12Original price $354.12$354.12$354.12 - $354.12Current price $354.12in 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 $518.76 - Original price $518.76Original price $518.76$518.76$518.76 - $518.76Current price $518.76Only 2 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 $159.05 - Original price $159.05Original price $159.05$159.05$159.05 - $159.05Current price $159.05Only 1 left!Chrome 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 $347.85 - Original price $347.85Original price $347.85$347.85$347.85 - $347.85Current price $347.85Only 3 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 $304.19 - Original price $304.19Original price $304.19$304.19$304.19 - $304.19Current price $304.19Only 1 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 $441.59 - Original price $441.59Original price $441.59$441.59$441.59 - $441.59Current price $441.59Out 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 $285.83 - Original price $285.83Original price $285.83$285.83$285.83 - $285.83Current price $285.83Out of stockOuter 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 $1,728.31 - Original price $1,728.31Original price $1,728.31$1,728.31$1,728.31 - $1,728.31Current price $1,728.31Only 2 left!Camshaft & 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 $222.62 - Original price $222.62Original price $222.62$222.62$222.62 - $222.62Current price $222.62Only 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 $273.50 - Original price $273.50Original price $273.50$273.50$273.50 - $273.50Current price $273.50Out of stockChrome 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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Steel Retainers SB Chevy B-Hive Valve Springs ISK165-ST
#ISK165-A & ISK195-A
SKU: ISK165-STOriginal price $126.42 - Original price $126.42Original price $126.42$126.42$126.42 - $126.42Current price $126.42Only 1 left!Steel Retainers SB Chevy B-Hive Valve Springs#ISK165-A & ISK195-AISK165-STK165-ST- Ideal for street or highly stressed applications - Specially...
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Super-Rad Dual Valve Springs with Damper (16) 1.625" OD ISK1645
250LBS @ 2.020" Seat Pressure, 690LBS @ 1.245" Open Pressure, 1.180" C
SKU: ISK1645Original price $524.92 - Original price $524.92Original price $524.92$524.92$524.92 - $524.92Current price $524.92Only 1 left!Super-Rad Dual Valve Springs with Damper (16) 1.625" OD250LBS @ 2.020" Seat Pressure, 690LBS @ 1.245" Open Pressure, 1.180" Coil BindISK1645K1645Th...
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Ultra-Rev Kit Machined Aluminium Rev Plate, Hard Coat Anodised ISK1300-LRK
Suit SB Chevy Bow-Tie Blocks with Raised Lifter Bosses
SKU: ISK1300-LRKOriginal price $293.10 - Original price $293.10Original price $293.10$293.10$293.10 - $293.10Current price $293.10Out of stockUltra-Rev Kit Machined Aluminium Rev Plate, Hard Coat AnodisedSuit SB Chevy Bow-Tie Blocks with Raised Lifter BossesISK1300-LRKK1300-LRKThe "ULTRA ...
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PSI Triple Valve Spring (16) 1.660" OD & 1.130" Coil Bind ISK1250
395LBS @ 2.250" Seat Pressure, 1178LBS @ 1.200" Open Pressure
SKU: ISK1250Original price $1,183.45 - Original price $1,183.45Original price $1,183.45$1,183.45$1,183.45 - $1,183.45Current price $1,183.45in stockPSI Triple Valve Spring (16) 1.660" OD & 1.130" Coil Bind395LBS @ 2.250" Seat Pressure, 1178LBS @ 1.200" Open PressureISK1250K1250You can trust...
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