$380.00 Set of 16, Free Shipping
PSI Performance Springs DR-424 is a severe duty dual valve spring designed for solid roller valvetrain. Designed for aftermarket cylinder heads with 1.525″ OD Dual Springs.
Type: Dual
Spring OD: 1.525″
Inner ID: .780″
Seat: 250 lbs @ 2.000″
Open: 775 lbs @ 1.200″
Recommended Lift: .800″
| Part# | DR-424 (Single Spring) |
| Alt Part# | DR-424-16 (Set of 16) |
| Description | PSI Drag Race 1200 & RML Series Dual Valve Spring |
| Outside Diameter | 1.525″ |
| Outer Spring | ID 1.100″ |
| Middle Spring | N/A |
| Inner Spring | ID 0.780″ |
| Install Height | 2.000″ |
| Load at Installed Height | 250 lbs |
| Spring Open Height | 1.200″ |
| Spring Open Load | 775 lbs |
| Recommended Valve Lift | .800″ |
| Spring Rate (lbs/in) | 656 |
| Retainer Step | 0.100″ | Coil Bind (max) | 1.140″ |
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