- Capable of 6000+ rpm with stock springs and no valve float
- Excellent in the 2800-6500 rpm range
- Designed for big-inch stroker motors with head work
- Uses stock springs
- Works with stock hydraulics, with stock spring travel set to .560″ minimum
- Made in the USA
- Must check coil bind, valve-to-valve clearance and valve-to-piston clearance.





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