Orders / Commandes (450) 449-4442
The stock availability is a live feed system. If item is not in stock, we will order it as fast as possible for you.
Some items are Special Order Only. We don't carry them in stock. Call us to place an order.
Check StockKPMI® takes a scientific “System” approach when designing our Valve spring kits. Each component is designed to work with the others as part of the complete system. KPMI’s engineers use our proprietary design and simulation softwares, and draw on our 70+ years of design experience to create these systems. Our design, simulation, and manufacturing processes insure compatibility of the valve spring’s force and natural frequency with the cam profile, valvetrain mass, system harmonics, and the engine RPM. Our spring manufacturing partners are U.S based companies that are ISO certified. The Super-Clean Chrome Silicon valve spring wire we use is traceable back to Kobe Japan where some of the best spring wire in the world is manufactured. Combining our design and simulation protocols with this premium quality valve spring wire, and manufacturing processes including, heat treatment, stress relief, and shot peening, allow us to supply you with the best valve springs in the world.
| Type | Intake / Exhaust |
| Retainer Material | Titanium |
| Intake Valve Lift | 0.425" |
| Intake Installed Height | 1.180" |
| Intake Seat Pressure | 48# |
| Intake Open Pressure | 151# |
| Intake @ Lift | 0.425" |
| Exhaust Valve Lift | 0.400" |
| Exhaust Installed Height | 1.125" |
| Exhaust Seat Pressure | 40# |
| Exhaust Open Pressure | 119# |
| Exhaust @ Lift | 0.400" |
