DIAMETER 1.570" TO 1.225" VALVE SPRINGS

Harmonics or high frequency fatigue is present in all racing engines and will usually destroy the valvetrain if not controlled. Properly designed valve springs will control the dominant harmonics, provide the needed stability, and reduce valvetrain component wear. Ferrea valve springs are developed from high strength alloys, including premium grade chrome silicon steel. Our springs are heat-treated and stress relieved, which dramatically increases the spring's life. Our valve springs provide the stability needed for high lift, high rpm racing engines, while minimizing the load loss for today's aggressive valvetrain combinations.
Item# Description Qty. Price
S10006


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Chrome Silicon/Hydraulic & Solid
Outside Diameter: 1.005/1.43
Inside Diameter: 0.73/1.07
Seat Press.: 135 lbs @1.750
Open Press: 285 lbs @1.200"
Rate Inch: 275 lbs
Coil Bind: 1.120
Max Net Lift: .550

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$19.35
S10007


Diameters 1.570 To 1.225
Type/Material/Application: Dual Spring/Chrome Silicon/Flat or Hydraulic
Outside Diameter: 0.925/1.24
Inside Diameter: 0.66/0.915
Seat Press.: 130 lbs @1.690
Open Press: 306 lbs @1.090
Rate Inch: 320 lbs
Coil Bind: 1.020
Max Net Lift: .550

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$19.35
S10008


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Chrome Silicon/Flat or Hydraulic
Outside Diameter: 1.005/1.43
Inside Diameter: 0.725/1.07
Seat Press.: 170 lbs @1.830
Open Press: 368 lbs @1.210
Rate Inch: 320 lbs
Coil Bind: 1.110
Max Net Lift: .620

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$25.05
S10009


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Chrome Silicon/Hydraulic & Solid
Outside Diameter: 1.005/1.53
Inside Diameter: 0.73/1.11
Seat Press.: 135 lbs @1.875
Open Press: 395 lbs @1.225
Rate Inch: 400 lbs
Coil Bind: 1.160
Max Net Lift: .650

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$19.05
S10010


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Chrome Silicon/Roller or Flat
Outside Diameter: 1.04/1.55
Inside Diameter: 0.755/1.13
Seat Press.: 170 lbs @1.950
Open Press: 463 lbs @1.275
Rate Inch: 435 lbs
Coil Bind: 1.175
Max Net Lift: .675

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$30.31
S10011


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Chrome Silicon/Roller
Outside Diameter: 1.025/1.55
Inside Diameter: 0.74/1.135
Seat Press.: 165 lbs @1.950
Open Press: 465 lbs @1.300
Rate Inch: 470 lbs
Coil Bind: 1.150
Max Net Lift: .650

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$30.31
S10012


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Chrome Silicon/Roller
Outside Diameter: 1.025/1.55
Inside Diameter: 0.74/1.135
Seat Press.: 215 lbs @1.950
Open Press: 550 lbs @1.270
Rate Inch: 460 lbs
Coil Bind: 1.170
Max Net Lift: .680

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$34.88
S10014


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Chrome Silicon/Roller
Outside Diameter: 1.025/1.55
Inside Diameter: 0.74/1.135
Seat Press.: 210 lbs @1.900
Open Press: 520 lbs @1.240
Rate Inch: 480 lbs
Coil Bind: 1.130
Max Net Lift: .660

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$34.88
S10015


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Special Alloy/Endurance Roller
Outside Diameter: 1.04/1.56
Inside Diameter: 0.74/1.145
Seat Press.: 240 lbs @2.000
Open Press: 600 lbs @1.280
Rate Inch: 500 lbs
Coil Bind: 1.180
Max Net Lift: .720

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$37.10
S10021


Diameters 1.570” To 1.225”
Type/Material/Application: Dual Pacalloy/Roller
Outside Diameter: 1.135/1.55
Inside Diameter: 0.815/1.135
Seat Press.: 235 lbs @1.950”
Open Press: 635 lbs @1.200”
Rate Inch: 530 lbs
Coil Bind: 1.150”

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$47.85
S10022


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Vasco Jet. Roller
Outside Diameter: 1.025/1.57
Inside Diameter: 0.74/1.135
Seat Press.: 230 lbs @1.950
Open Press: 620 lbs @1.225
Rate Inch: 540 lbs
Coil Bind: 1.175
Max Net Lift: .720

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$47.85
S10025


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Chrome Silicon/Flat & Hydraulic
Outside Diameter: 1.005/1.53
Inside Diameter: 0.73/1.11
Seat Press.: 140 lbs @ 1.900
Open Press: 430 lbs @ 1.250
Rate Inch: 440 lbs
Coil Bind: 1.170
Max Net Lift: .650

ADD TO CART
$26.01
S10030


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Special Alloy
Outside Diameter: 1.025/1.57
Inside Diameter: 0.74/1.135
Seat Press.: 250 lbs @ 1.900
Open Press: 650 lbs @ 1.200
Rate Inch: 600 lbs
Coil Bind: 1.125
Max Net Lift: .660

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$47.85
S11011


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Special Alloy Roller
Outside Diameter: 1.04/1.56
Inside Diameter: 0.74/1.145
Seat Press.: 245 lbs @1.970
Open Press: 585 lbs @1.290
Rate Inch: 480 lbs
Coil Bind 1.190
Max Net Lift: .680

ADD TO CART
$59.18
S11012


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Special Alloy Roller
Outside Diameter: 1.04/1.56
Inside Diameter: 0.74/1.145
Seat Press.: 245 lbs @1.950
Open Press: 585 lbs @1.270
Rate Inch: 470 lbs
Coil Bind 1.170
Max Net Lift: .680

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$59.18
S11014


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Special Alloy W Cup Flat Tapped
Outside Diameter: 1.04/1.56
Inside Diameter: 0.74/1.145
Seat Press.: 195 lbs @1.975
Open Press: 540 lbs @1.275
Rate Inch: 500 lbs
Coil Bind: 1.175
Max Net Lift: .700

ADD TO CART
$59.18
S11015


Diameters 1.570 To 1.225
Type/Material/Application: Dual w/Damper/Special Alloy Roller
Outside Diameter: 1.04/1.56
Inside Diameter: 0.74/1.145
Seat Press.: 240 lbs @2.000
Open Press: 600 lbs @1.280
Rate Inch: 500 lbs
Coil Bind: 1.180
Max Net Lift: .720

ADD TO CART
$59.18
S11016


Diameters 1.570 To 1.225
Type/Material/Application: Dual/Special Alloy Roller
Outside Diameter: 1.153/1.56
Inside Diameter: 0.82/1.155
Seat Press.: 245 lbs @1.950
Open Press: 590 lbs @1.250
Rate Inch: 490 lbs
Coil Bind: 1.150
Max Net Lift: .700

ADD TO CART
$59.18

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