Description
S&S Super Stock Cylinder Heads For Harley Evolution Big Twin
S&S heads deliver excellent performance and accommodate additional upgrades seamlessly. This kit comes fully assembled, featuring stainless steel valves and high-lift springs capable of lifts up to .640″.
Features:
– Available in natural and black powder-coat finish
– Fully assembled, and include stainless steel valves and high-lift springs (up to .640 lift)
– Compatible with stock 3-1/2″ or 3-5/8″ bore engines
– Large 2.000″ intake and 1.605″ exhaust valves and high flowing ports supply plenty of air for big inch engines
– S&S Super Stock 10:1 ratio piston kits are required and sold separately
– Intake manifold, pistons and gasket kits are sold separately
– Must reuse stock headbolts
– Made in the USA
– Sold in pairs
