PAC Racing Springs PAC-1529 - Circle Track 1500 Series Valve Spring Small Diameter Dual - nitrided Nano-Peen

Part#: PAC-1529 Name: PAC-1529 Circle Track Dual SKU: PAC-1529 Alt Part#: PAC-1529-16 Description: Circle Track 1500 Series Valve Spring Small Diameter Dual - nitrided Nano-Peen Outside Diameter: 1.284 Outer Spring ID: 0.900 Middle Spring ID: N/A Damper: No Inner Spring ID: 0.630 Install Height: 1.900 Load at Installed Height: 180 Spring Open Height: 1.150 Spring Open Load: 600 Recommended Valve Lift: 0.750 Spring Rate (lbs/in): 560 Mass (grams): 99 Coil Bind (max): 1.085