.

These springs were purposely designed for those requiring a reliable spring for endurance racing applications, such as circle track or road racing.

But they are also great for short track or drag race applications for racers wishing a longer lasting more reliable spring. Manufactured from race proven high endurance Alpha 1 material. All are cycle-tested at maximum valve lift to insure peak performance.

Part number S608 and S623 also features an electro-polished outer spring for enhanced fatigue resistance.

OD:1.625
ID:.770
Roller Spring
Max Lift: .750
Spring Type: Dual W/Damper
Seat Pressure: 240/2.000
Open Pressure: 685/1.250
Coil Bind: 1.150