Originally Posted by Bikeguy Joe
Better low end? Use a larger rear sprocket.
You don't get a lot of low end from a 2.5 hp two stroke.
You can get a lot out of a 2 stroke. It's all about tuning for RPM range you want. You can make a torque monster with nothing over 4k rpm with the right expansion chamber. But if he wants more low end with continuing power I'd recommend higher compression. Higher compression just increases power output everywhere.
If he wants solely more low end and keep his top end about where it's at a tuned pipe will do exactly that. Port and polish and manifold matching will just make it an all around better outputting engine, but like you said a sprocket would solve his problems, but I am currently on a 36T and have no problems with large hills... Ask 2Door, he's seen it in person.