PE,
The 45cc engine, is actually a bought out product from a Factory called RCGF, this is one very good motor, comes with a genuine RCexl ignition and runs like no other 45cc I have tested. I started it set the needles and flew it right away. It performs flawlessly, runs a Menz S 21X8 at about 7500RPM and never even stumbles. Not only the best running 45cc, but also the strongest I have had so far. RCGF are the motors that are talked about under the PEAK name, this includes the Peak 65cc and the peak 45cc, the other motors available from peak are actually Grpro's products.

Regards
Andreas