Hi all,
I have a couple of queries and was hoping some bright sparks on here might give me the info...
I have been looking at YZ 125's, mainly the engine, and I know there are differences but I was just wondering if anybody knew what the main differences between them are that give the yz its extra umph, I mean is it as simple as porting differences or is it a completely different engine??
Exhaust and carburettor are a lot bigger and gear ratios must be different for the track use but what about the engine internals??
They have similarities in look but this doesnt mean anything..
Any help appreciated, I guess everyone can tell what I'm thinking about doing...
Thanks
Danny