Cylinder Head Style:             Bare

Cylinder Head Material:        Aluminum

Cylinder Head Finish:           Natural

Combustion Chamber (CC):  77cc

Intake Runner (CC):              188cc

Intake Port Shape:                 Rectangular 

Intake Port Location:              Standard

Exhaust Port Shape:              Square

Exhaust Port Location:           Standard

Competition Valve Job:           No

Intake Valve Diameter (In):     2.072 in

Exhaust Valve Diameter (In):  1.680 in

Spring Diameter (In):               1.450 in

Valve Cover Mounting Style:    Center & Perimeter Bolt

Accessory Bolt Holes Drilled:   Yes

Intake Valve Angle:                   18 Deg

Exhaust Valve Angle:                18 Deg

Valve Guide Material:                Bronze

Valve Seats Machined:              Yes / 3-Angle

Valve Seat Material:                   Ductile Iron

Steam Holes Drilled:                  No

Oiling Style:                                Oils Through Pushrods

Machined for O-Ring:                 No

Heat Crossover:                         No