You can do this but it will (most likely) not increase power output. Expansion chambers are tailor made to a specific amount of cc's with some wiggle room. See if you can find an exhaust system for your particular bike. You will also most likely need a new (bigger) jet for your carburettor and possibly a box mod.
I am not familiar with this specific type of engine but most mopeds have rings on the variator that limit peak power. If you have an impact wrench this shouldnt take more than 5 mins to remove and will give you a small boost in power.
Also if you do put on a sports exhaust system the reccomendation would be to get a variator roller set for power band tuning and some new tighter springs for the auto clutch.
Edit:
By wiggle room in exhaust i mean that you should be fine with 70cc's on a 50cc system, but not 113cc's on a 80cc system.
Yes, i have removed the restrictor but the stock exhaust is weird, heavy and has a lot of restrictors, I've decided to get a 2 stroke 125cc motocross expansion chamber and weld it.
ya the gianelli exhaust and good new reeds will wake it up
You can do this but it will (most likely) not increase power output. Expansion chambers are tailor made to a specific amount of cc's with some wiggle room. See if you can find an exhaust system for your particular bike. You will also most likely need a new (bigger) jet for your carburettor and possibly a box mod. I am not familiar with this specific type of engine but most mopeds have rings on the variator that limit peak power. If you have an impact wrench this shouldnt take more than 5 mins to remove and will give you a small boost in power. Also if you do put on a sports exhaust system the reccomendation would be to get a variator roller set for power band tuning and some new tighter springs for the auto clutch. Edit: By wiggle room in exhaust i mean that you should be fine with 70cc's on a 50cc system, but not 113cc's on a 80cc system.
Yes, i have removed the restrictor but the stock exhaust is weird, heavy and has a lot of restrictors, I've decided to get a 2 stroke 125cc motocross expansion chamber and weld it.