Description

High-RPM stability and consistent valve control demand springs engineered for precision. The Isky 235D delivers a stiff 350 lb/in rate that maintains accurate valve timing under aggressive cam profiles, eliminating float and valve recession that cost horsepower. If you’re running a modified or race engine, these springs are essential to protect your valvetrain investment and unlock peak performance.

Spring Rate: 350 lb/in
Coil Bind: 1.150 inches
Outside Diameter: 1.260 inches
Configuration: Single spring/damper
Quantity: Set of 16
Material: Alloy steel
Installation: Bolt-on replacement