Aluminum, CNC milled, long threaded, pinch point 1.2 mm, compression 11.7 - 12:1. w/ oil ring.
or
http://www.sip-scootershop.com/en/produ ... r_22159371
Aluminium, CNC milled, long thread, 1.1 mm squish band, compression 1:11.5-12.5, with O- ring
Im using standard stroke crank what is the difference between these two cyclinder heads? what compression ratio would better suit it?
mallossi 172 ported and polished
running standard carb
jl pipe
21 tooth cosa clutch
help thank you
