Dear Raziel:
I am sure there is. I have never changed the sprockets on the Yamoto's or the Kazuma's myself. But there is many companies out there that have or can make sprockets for anything.
All The Best.

 

check the kazuma kmx sprockets they are swappable with the kmx150 they sell the kmx 110 sprockets at www.redcatmotors.com
click on the kmx110 and then go to parts

after seeing that pic of the rfx 150 one ? doe that outperform the yamoto 150?

 

Any word on the "improvements"?

 

Snowolf:
In regard to your post, I really feel at this time the Kazuma RFX 150 does out perform the Yamoto 150.

And newtoo, I did not get the list of improvements from Yamoto yet. But as soon as I do I will post it!!!!!!!!!
www.racewayatv.com

 

The manual that came with my KMZ150 on page 15 says the cvt can be fitted with a range of different rear sprockets. (23,26,30 teeth). A 30 teeth rear sprocket is use for easy hill climbing and the 23 teeth for speed.