• For Harley Davidson big twin evolution all years.
• Fast ramps for 92 + inch motors
• Very broad power band 2800 - 6000 RPM
• For big twin evolution all years
• For use with andrews springs and heat treated steel collars
• Ok for hydralic lifters
• EV72 grind
• Duration @ .053" of 264/268  Valve lift of .560/.560

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