Exhaust

[toby w]

I’ve finished my bike and I'm looking to get a better exhaust to help with heat dissipation and to add a bit of power. Im looking at this one but I have a few questions. How good is it. Would I have to retune or rejet the carb.

 

[Venice Motor Bikes]

You'll get the exact same power increase by simply gutting & drilling the stock exhaust pipe... (& yes, you'll have to re-jet the carb).

That new pipe you're looking at isn't designed exactly right to be a real expansion chamber.
If you want a proper expansion chamber, you'll need to get one from a 80cc motorcycle & modify it to bolt onto your bike.

 

[toby w]

i tried to modify the pipe last time by cutting of the small tube inside and drilling 3 holes in the end cap but the motor blew up soon after

 

[toby w]

what about this pipe

 

[Venice Motor Bikes]

That pipe probably has internal baffles in it that would make it similar to the stock pipe... So, unless you're willing to modify is (as you would a stock pipe), it's still a waste of money.

Unfortunately, the pictures don't show a 'straight through' angle of the muffler part... If you can see straight through it?, it will be better.

 

[toby w]

I don’t fancy messing with the stock pipe. If I put on the new expansion chamber style pipe and jet the carb to a 75. And raise the clip on the needle will I be alright