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PAC Racing 1200 Series Circle Track Valve Springs
Valve Springs, 1200 Series Circle Track, Dual, 1.550 in. O.D., 663 lbs./in. Rate, 1.150 in. Coil Bind Height, Set of 16
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Estimated Ship Date from NV, GA: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
PAC-1226-16
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC-1226-16
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
0.800 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.550 in.
Coil Bind Height (in.):
1.150 in.
Damper Spring Included:
Yes
Spring Rate (lbs./in.):
663 lbs./in.
Inside Diameter of Outer Spring (in.):
1.100 in.
Inside Diameter of Inner Spring (in.):
0.706 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold as a set of 16.
Installed Height (in.):
2.000 in.
Seat Pressure at Installed Height (lbs.):
275 lbs.
Open Height (in.)(application):
1.200
Open Pressure (lbs.):
805 lbs.
Remanufactured:
No
PAC Racing 1200 Series Circle Track Valve Springs
PAC Racing 1200 Series circle track valve springs are great for providing your valve train with optimal performance. Select them when you're upgrading camshafts or doing engine rebuilds. The 1200 series use a premium alloy that outperforms automotive industry standards; and PAC Racing processes the alloy to aerospace shot-peening standards to achieve superior fatigue dependability. This ensures that the springs maintain the load needed to perform lap-after-lap.
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