Specifications

• Part# PAC-1590
• Name PAC-1590 Circle Track Dual
• SKU PAC-1590
• Alt Part# PAC-1590-16
• Description Circle Track 1500 Series Valve Spring 1.474 Dual - nitrided Nano-Peen
• Outside Diameter 1.474
• Outer Spring ID 1.050
• Middle Spring ID N/A
• Damper No
• Inner Spring ID 0.754
• Install Height 2.050
• Load at Installed Height 250
• Spring Open Height 1.250
• Spring Open Load 670
• Recommended Valve Lift 0.800
• Spring Rate (lbs/in) 525
• Mass (grams) 141
• Coil Bind (max) 1.190