RE: Need a hot 15-25
Brian,
I wouldn't dare use the screen name you selected...
MVVS has a 2.5 cc engine (.15), which is capable of exceeding 25,000 RPM, or over 22,000 RPM as it comes, with the original MVVS tuned silencer.
This engine is quite inexpensive and has a durable, true ABC construction.
E-mail me if you want to know more.