The Absolute Best Valve Springs in Drag Racing Today... Now Available from Isky!
We are proud to announce that Isky has recently been appointed a Distributor for PSI Sportsman Drag Race Valve Springs.
You can trust PSI (Performance Springs Inc.) Valve Springs to out-perform all others because they are exclusively 100% American Made using the finest materials, the best CNC Equipment and state-of-the-art trade secret processing.
Don't settle for those foreign-made springs of lesser quality. Insist on genuine PSI Drag Race Valve Springs and get into the winners circle!
Isky stocks the following PSI part numbers.
PSI Valve Springs Specifications
*Note: 1200 Series Springs utilize special Heat Treating and additional "Special Processing" for minimal load loss.