Isky Cams RAD-9000 Precision Tool Room Dual Valve Springs w/ Damper - (Set of 16) - Outer: 1.570" O.D., 1.145 I.D. - Inner: 1.040" O.D., .740" I.D. HASZ6SM fits both hard top and

fits both hard top and convertible models

Shifter design offers a retro muscle car look and feel

SPECS: Base Style: Dropped 1 inch Brand: Holley

No choke for unobstructed airflow

Vehicle Applications: Ford F-250 Super Duty 2019-2017

Isky Cams RAD-9000 Precision Tool Room Dual Valve Springs w/ Damper - (Set of 16) - Outer: 1.570" O.D., 1.145 I.D. - Inner: 1.040" O.D., .740" I.D. HASZ6SM fits both hard top andIsky RAD 9000 Precision Tool Room Valve Spring taken one step further. Springs have undergone Radial Densification (RAD), which further modifies the springs' physical properties. Designed for endurance oval track racing, RAD 9000 springs are sold in sets of 16. Isky RAD 9000 Precision Tool Room Dual Valve Springs w Damper Outer: 1. 570" O. D. 1. 145 I. D. Inner: 1. 040" O. D. . 740" I. D. Seat Pressure 250 @ 2. 030" Open Pressure: 625 @ 1. 300" Rate