70cc Cylinder for 2009 SR50-R

Hey guys(sorry scooterinvasion members for the redundant post)

This is what I have:
2009 SR50 injection model that is going to be converted to carb. It will
have a 21mm dellorto black carb, Tecnigas RS 2 pipe(similar specs to the
yasuni r pipe I hear).

The Malossi CDI is only good to 12.5-13k RPM, but this value is higher
than the value of RPM for pipe, so it should be irrelevant.

I want to have the cylinder that will perform at the maximum power and
RPM of my current stock piaggio crankshaft, the 21mm carb, and "like
Yasuni R" pipe.

What cylinder is best for the maximum torque and RPM?

Should be ~11k maybe?

i am using a motoforce racing cylinder and making great power at 11000 with it
i am however using a city16

Im not sure the r will pull to the rpm you are looking for

I think you need a 2fast cylinder with NX.



I hope your conversion project works out well for you McScooterson, it will certainly be a neat one!

~Josh