Circle Track valvetrain components are one of the foundational products at PAC Racing. We offer several lines of springs dedicated to circle track racing with class-specific offerings for 602, 604, and RaceSaver options.
These class-specific options are class-legal while exceeding factory specs for RPM and endurance.
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0.891 in. ID – 1.245 in. OD – 1.700 in. installed Height – 0.430 in. Max Valve Lift
0.891 in. ID – 1.245 in. OD – 1.700 in. installed Height – 0.430 in. Max Valve Lift
0.910 in. ID – 1.355 in. OD – 1.750 in. installed Height – 0.550 in. Max Valve Lift
0.910 in. ID – 1.355 in. OD – 1.750 in. installed Height – 0.550 in. Max Valve Lift
Top 0.655 in. / Bottom 0.860 in. ID – Top 1.077 in. / Bottom 1.282 in. OD – 1.800 in. installed Height – 0.500 in. Max Valve Lift
Top 0.655 in. / Bottom 0.860 in. ID – Top 1.077 in. / Bottom 1.282 in. OD – 1.800 in. installed Height – 0.500 in. Max Valve Lift
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