Isky Racing Cams 9968RAD | Engine Valve Spring Kit

Introducing Iskys new RAD-9000 process option for Tool Room valve springs. Under trade secret Radial-Densification (RAD), the physical properties of Tool Room springs are optimized for even greater surface to core uniformity. To insure theyll withstand the tortures of sustained high rpm operation, we subject each batch to the most rigorous real world test standard ever created, SPINTRON-TEST II. Its a no holds barred run as high as 9000 RPM where for over 1,000 miles, race ending competitive abuse is continuously revisited. This pass or fail benchmark is the only test of its kind in the performance industry and every set of Tool Room springs conforms to its high standard

• Rate Per Inch 560; Coil Bind 1.100; Max Lift 0.750 in.;
• RAD-9000™ Tool Room Valve Spring; Dual w/Damper; Outer OD/ID 1.570/1.145in.; Inner ID/OD 1.040/0.745in.; Seat Pres. 250lbs at 1.950in.; Open Pres. 665lbs at 1.200in.;
• Engineered To Perform
• RAD-9000™ Tool Room Valve Spring
• Precision Designed
• Sustained Redline Protection