dude it depends on wat u want to modify?? is it the body line?? or the performence?? the only advice i would give u is to make ur bike lighter rather than adding stuff to the body of ur bike... NOw when it comes to an engine n performence the basic thing u can do is add a K&N air filter .. change the carbarator jets...change the mixture n add a disk brake for safety.. that's just level one u can go for porting,sproketing,adding a free flow exhaust, polishin the cylinder head, changing the crank adding another gear or even play with the cdi to extract power.. lastly u can put a bigger piston too .. so u if u have the money .. u can just keep on increasing the power but ur engine life will decrease n ur life n maintainence will increase... but it a price u pay for RACING
100cc 4 stroke motor bike
38mph
about $2,800
No we can't use 100cc 4 -stroke dirt bike race against 85cc dirt bikes.
there are lots of common 100cc dirtbikes like kx100, rm100 (rare) and 4 strokes including crf100, xr100 and lots more.
Multiply by (25 cc/unit)
Like a motorcycle, it can range from about 100cc to 700cc or more
55 stock - 62 with taller gearing.
Shooting Star (large bike)
yes a 100cc is perfectly safe for a 12 year old boy a girl shouldn't be allowed on one e.g sean hayse
100cc the bigger the better
u dont know that it goes about 40-65 mph