Herbert Valve Springs are manufactured from the highest quality materials and are inspected during every step of manufacturing to insure the kind of performance you would expect.
OD:1.250
ID:.876
Hyd. Spring
Max Lift: .550
Spring Type: Single W/Damper
Seat Pressure: 110/1.800
Open Pressure: 300/1.200
Coil Bind: 1.175