S&S Cycle 90-1106 S&S Cycle Super Stock Cylinder Head Kit

• S&S Super Stock cylinder heads for Twin Cam style engines offer significantly improved flow over stock cylinder heads and can be used with stock H-D 88″ and 95″ pistons as well as with S&S Twin Cam style pistons• Because the stock Twin Cam Style head bolt pattern is large enough to accommodate a cylinder bore size of up to 4″, all S&S heads for Twin Cam engines use the stock bolt pattern• This means that S&S heads purchased for an 88″ or 95″ engine can still be used if a rider later upgrades to S&S 4″ bore cylinders• Rocker box gaskets only, are included. Large port manifold recommended, but not required. Sold separately