Dual Valve Springs
1.320 O.D With 135 lbs @ 1.770" Seat Pressure

Spring Specification:

Spring O.D: 1.320"
Spring I.D: .655"
Seat Load: 135 @ 1.770"
Open Load: 400 @ 1.120"
Coil Bind: 1.040"
Rate (LBS/In): 408 lbs