I recently put a Weisco piston, suppertrappe pipe and silencer, all around valve job, trail port, bore 10cc, k&n air filter, xct holeshot tires (22x11x9), clutch kit, compleate gasket set, dg nerfs, bumper and some handlebars on my 300ex. When i run it, all of the it seems to run great on top end, now i can hang w/ our Sport 400l, but that is only in top end. My gears dont pull as hard all, which means i lost lots of low end. Could somone tell me the best ways to gain mor low end power? thanks guys/gal's

 

What size front sprocket are running??

 

stock size sprocket

 

sound liek the opposite of my 300ex. I had to loose 5-10 mph but gained MAJOR low end
Im climing **** with my bald-*** blackwater tires lol

 

Are you positive you have all the timeing marks right ? the first time i rebuilt mine i was off one mark and it made a big differince .

 

C&S when your timing mark was off,
did it make a screachign noise when you tried to start it ?