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:1.550
ID: .735
Roller Spring
Max Lift: .725
Spring Type: Dual W/Damper
Seat Pressure: 195/1.940
Open Pressure: 600/1.200
Coil Bind: 1.150