| Part# | CT-1581-ML (Single Spring) |
| Alt Part# | CT-1581-ML-16 (Set of 16) |
| Description | PSI Drag Race 1500 Series Dual Valve Spring |
| Outside Diameter | 1.300″ |
| Outer Spring | ID .898″ |
| Middle Spring | N/A |
| Inner Spring | ID 0.628″ |
| Install Height | 1.920″ |
| Load at Installed Height | 182 lbs |
| Spring Open Height | 1.120″ |
| Spring Open Load | 700 lbs |
| Max Valve Lift | .800″ |
| Spring Rate (lbs/in) | 648 |
| Retainer Step |
.100″ |
| Coil Bind | 1.050″ |
PSI CT 1581 ML Dual Racing Valve Springs
$698.00 Set of 16, Free Shipping
PSI Performance Springs CT-1581-ML is a severe duty dual valve spring designed for solid roller valvetrain with added features. This model includes Max Life (ML) multi-step surface enhancement process to increase spring endurance. Designed for aftermarket cylinder heads with 1.300″ OD Dual Springs.
Type: Dual
Spring OD: 1.300″
Inner ID: .628″
Seat: 182 lbs @ 1.920″
Open: 700 lbs @ 1.120″
Max Lift: .800″
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