Hi,

I couldn't find any forum for the TU250x, so I thought of writing my question here.

1- What are all possible sprocket sizes for the TU250x?
2- What sprocket size would be the maximum you'd put on?

I know this:
Stock sprocket sizes are 15/43

I found out this:
Rear sprocket size could be: 39T, 41T, 43T, 49T (possibly more combinations too)
Front sprocket size could be: 13T, 14T, 15T, 16T (possibly but unlikely more combinations are possible)

I like good fuel economy, and low engine RPM.
I live in Miami where the weather is hot, and the streets are all level (no hills to ride upon other than a bridge).
Most roads I ride on will be 35-55MPH roads, occasionally I'd like to hit the highway.

I was thinking that even with a 16/39 setup, I might not get what I really want to get out of the bike. But since it's a 250cc, I can't ask too much of it.

What would your opinions be on a 16/39 sprocket setup?
and
Are there any smaller rear sprockets than 39T available, and/or larger front sprockets than 16T available?

From what I saw, the front sprocket could possibly be only 16, 17T seems like too big to fit the housing.

Ayway, where would be the best place to buy these sprockets?
At the moment, I've only found an Australian company selling the 39T sprocket.