Description
Stage 1 round port cylinder head
Hand round ports for increased flow and performance
40 x 35.5mm valves, hardened keepers, chromoly retainers, and dual high-rev springs
AA 500 series casting, clean flowing cooling vanes
Modernized combustion chamber for increased head flow & performance
A second full fin so you can fly cut your heads deeper
Blocked-off rocker stud bosses to eliminate the O-ring and stop possible oil leaks
Long-reach 3/4″ spark plug
