| Industry | Automotive |
|---|---|
| Product Market | Domestic |
| Product Category | Drag Race Dual Springs |
| Product Type | Engine Valve Spring Kit |
| Outer Diameter – Outer Valve Spring | 1.522 IN |
| Inner Diameter – Outer Valve Spring | 1.050 IN |
| Inner Diameter – Inner Valve Spring | 0.726 IN |
| Installed Height | 2.250 IN |
| Installed Load / Height (Valve Closed) | 400 LB @ 2.250 IN |
| Open Height | |
| Open Load | |
| Open Load / Height (Valve Open) | 1252 LB @ 1.300 IN |
| Valve Spring Rate | 895 PS |
| Max Coil Bind | 1.190 IN |
| Max Valve Lift | 0.950 IN |
| Recommended Valve Spring Retainer – 500 Series | R508, R509, R544 |
| Recommended Valve Spring Retainer – 600 Series | R608, R609, R644 |
| Recommended Valve Spring Seat | S110, S126, S134 |
| Recommended Valve Spring Cup | C203 |
| Valve Spring Series | 1300 Series |
| Valve Spring Type | Dual |
| Valve Spring Application | Drag Race |
| Primary Market | Drag Race |
