PAC Racing Springs PAC-1237X - RPM Series Dual Valve Spring RACE ONLY Spring

Part#: PAC-1237X Name: PAC-1237X RPM Series RACE ONLY Dual SKU: PAC-1237X Alt Part#: PAC-1237X-16 Description: RPM Series Dual Valve Spring RACE ONLY Spring Outside Diameter: 1.274 Outer Spring ID: 0.900 Middle Spring ID: N/A Damper: No Inner Spring ID: 0.630 Install Height: 1.800 Load at Installed Height: 200 Spring Open Height: 1.100 Spring Open Load: 585 Recommended Valve Lift: 0.700 Spring Rate (lbs/in): 550 Coil Bind (max): 1.045