Zongshen 125cc or YX140cc?

[pit bike 1]

Personally I want the Zongshen as its a good strong engine with plenty to do if I want. But the 140cc with z40 cam is very very tempting. What do you guys think?

[Dangle_kt]

I've not heard much about the zonger in terms of reliability - especially when tuned.

Worth finding out first, cos a bigger engine is more likely to make the same power reliably than a smaller higher tuned engine. And the yx140 is a good solid choice.

[Harryw28]

Go for the yx 140 with z-cam and a good carb set up and exhurst set up . Carnt fault mine at all .

[pit bike 1]

Ive got 28mm bore exhaust and new Mikuni vm22. Would like the 140 but it seems every one is always having problems on here. If I did get it the only tune would be the z40 cam. As for the zonga ive heard quite alot of good and they have their own racing team. I wouldnt do any tuning to it though I reckon.

[James116]

Speak to Speedflash on here, a decent setup z125 Ho is as quick of not quicker than a 140

[pit bike 1]

Originally Posted by James116

Speak to Speedflash on here, a decent setup z125 Ho is as quick of not quicker than a 140

I heard some thing along the same line. Sounds like the best choice. Good strong engine.