PAC-1393 - 1.349" Dual Endurance Spring
Coming Soon – PAC-1393!
Taking Orders Now.
Production to be expected early 2026.
This spring has been highly requested by circle track engine builders seeking a proven, high-quality valve spring without the exorbitant cost.
Specs:
- OD: 1.349"
- ID Outer: 0.925"
- ID Inner: 0.629"
- Seat Pressure: 235 lbs @ 2.125"
- Open Pressure: 865 lbs @ 1.225"
- Max Bind: 1.190"