Isky Performance Valve Springs
Style: Single with Damper
Outer O.D.: 1. 260"
Closed Pressure: 130 @ 1.750'
Open Pressure: 320 @ 1.200"
Coil Bind: 1.130"

Isky Performance Valve Springs
Style: Dual with Damper
Outer O.D.: 1. 530"
Closed Pressure: 135 @ 1.875"
Open Pressure: 380 @ 1.250"
Coil Bind: 1.160"

Isky, Tool Room "Gold Stripe" Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.645"
Closed Pressure: 265 @ 2.120"
Open Pressure: 700 @ 1.320"
Coil Bind: 1.240"

Isky, Tool Room "Gold Stripe" Roller Valve Springs
Style: Dual 
Outer O.D.: 1.560"
Closed Pressure: 245 @ 1.950"
Open Pressure: 590 @ 1.250"
Coil Bind: 1.150"

Isky, Tool Room "Gold Stripe" Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.560"
Closed Pressure: 245 @ 1.970"
Open Pressure: 585 @ 1.290"
Coil Bind: 1.190"

Isky, Tool Room "Gold Stripe" Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.560"
Closed Pressure: 245 @ 2.000"
Open Pressure: 600 @ 1.300"
Coil Bind: 1.200"

Isky, Tool Room "Gold Stripe" Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.570"
Closed Pressure: 250 @ 2.030"
Open Pressure: 625 @ 1.300"
Coil Bind: 1.200"