S&S Cylinder Heads For Harley Big Twin Evo 1984-1999

S&S Cycle Cylinder Heads For Harley Big Twin Evo

Bolt on some ground-poundin’ power. These heads are designed to be used with stock flat top pistons. You don’t need crazy-master-engine-builder-status to make good, usable power – just bolt them in and go.  While they will work with stock components, a good exhaust, air cleaner, and cam will make these heads really shine. (You can go a little wilder with the cam, too – S&S installs high-lift springs for you!) As with most engine modifications on a Blockhead, adjustable pushrods are a great (but not absolutely necessary) addition to whatever package you’re putting together. Don’t forget gaskets!

Features:

• Kits are fully assembled, and include stainless steel valves and high-lift (.585″) springs
• Optimized for smaller displacement engines
• Slight increase in compression (8.8:1 in an 80″ motor) with 82cc chamber volume
• Port design increases flow while maintaining velocity
• Set up for .585″ maximum lift
• EFI compatible
• Available in silver powder-coat or black powder-coat finish
• Sold in pairs
• Made in the USA