Bare Head - Alloy Performance - 61cc Chamber
Spark Plugs, Thread = 14mm x 1.25mm, Seat = Gasket, Reach = 19mm
Requires Screw In Rocker Studs & Guide Plates
Flow Data @ 28"(CFM) With 2.020" & 1.600" Valves
@.200" = 114
@.300" = 167
@.400" = 218
@.500" = 236
@.600" = 251
Exhaust
@.200" = 102
@.300" = 143
@.400" = 152
@.500" = 152
@.600" = 152