So I've decided to do the most important change to my Shineray x1 (150gy-11a) bike that I need.
The bike gets to 5th gear within no time at all and revs very very high whilst cruising. The 2nd/3rd gear are useless so I skip
through them in seconds.

I'm trying to find suitable sprockets for my bike but not sure where to find. I believe the current setup is 14/45.

What should I change the sprocket size to?

What size chain will I need for the new sprockets. Anyone know a good source for a genuine DID O-ring chain on taobao?


Any help is appreciated. Thanks.