Skip to content

Moonshine Horsepower High Lift Valve Spring Kit for M8 Engines, MHP-S640

Original price $539.95 - Original price $539.95
Original price
$539.95 - $539.95
Current price $539.95

Moonshine Horsepower 0.640" Valve Spring Kit For Harley Milwaukee Eight Engines 

This made in the USA valve spring kit works great with cams up to .640" lift.


  • Valve Guide Seals
  • Billet Steel Triple Groove Locks (compatible with stock H-D and H-D SE valves)
  • PSI Springs
  • Star Racing Titanium Retainers

Spring Info:

  • Max lift 0.640"  
  • 80lbs seat pressure at 1.585" installed height
  • Force at max lift 272lbs ±2lbs