The Worlds Finest Oval Track Spring. The long life 9900 Series gold stripe valve springs are test proven for 1,000 racing miles. That's every part number and every batch! Near-Zero load loss. Absolute maximum endurance. Includes the Gold Standard Test Certification and if you are not completely satisfied with the performance of these springs, return them to ISKY for a full refund.

O.D./I.D:1.560/.820
App: R
Max Lift: 700
Spring Type: Dual
Seat Pressure: 245/1.950
Open Pressure: 590/1.250
Coil Bind: 1.150