Honda 143cc Big Bore Kit - Piston/Barrel Install 

Lighting that book on fire was a good time haha

I've work with this 125 engine for couple of years before, i guarantee, the first one to fail is the cam chain tensioner assembly, it fail regularly, even it's stock I've done dozens of bikes, same problem (wave 125/110, same tensioner style) So be careful when upgraded the camshaft and harder springs (raised rpm limit also), mine was exploded 2 times, luckily, nothing hurts I modify it to manual, so far so good, you can watch in my channel Or try buy from thailand/malaysia, the aftermaket one has different materials, more durable, but i think the tensioner will give up first 🤷🏻

I’m glad Kass got to experience Francis

2:10 Jaysus, that can of cleaner is definitely at least $6 and you're using it like a garden hose. I'm triggered.

Hi there may I ask what head and cylinder kit you used?

what else to be changed when putting in big bore kit?

Stock injector and TB?

Why go to all that effort and expense for a lousy 18cc more?? Whattya get, ONE more hp?