if l do will it make the bike go faster or sound better?
also how much would it be??
wat other pipes r good???
i dont want a silencer want a loud one

l do not see why not. my neighbor put a large baked bean can on his car and it sonded hell good until it fell off on the highway

It is a 125. How fast do u expect it to go!!!???

A larger exhaust will help the engine breath better on high end speeds. That is why u see headers on hot rods. You can put a bigger exhaust on any bike/car, but it wont do much good until u build the engine better, in some cases it hurts to do it. Engines require a certain amount of backpressure to operate at top effeciency, (too large an exhaust wont let back pressure build up, harming fuel economy, & even possibly burning valves & pistons). Who cares about sound? It is laughable to see a learners bike desperately trying to look & sound like a big bike. Sorry, but it just is, & I've got two 125cc bikes. If u want a faster & better sounding bike get a bigger bike.

Yes Pro Circuit does make a pipe for that bike. It will make it sound better and look more trick but will not change performance any noticeable amount.