Is it wise to change front sprocket from 14 to 16. ? Bik70CC unique

[pwuser151030852615]

I want to change it to improve top speed and fuel avg. Will it be helpful. ? Any long term effects on engine. ? 70cc unique UD70 2015 model.

[k-four-nine]

Going from 14/41 to 16/41 should give you about 15% better speed. So instead of 60KM/h, the bike will go about 69KM/h at exact same RPMs.

If you want even more speed then you can go 16/39 which will give you a hefty 20% boost (60KM/h > 72KM/h), although it'll severely impact your acceleration.

[ibaloch777]

What if rear sprocket is reduced from 41 to 39/38.
Keeping front unchanged?

[k-four-nine]

About 5 to 8%:

https://sprocketcalculator.com/

[ibaloch777]

What will be the long term effect on engine.

[ryu.iori]

don't do it. it's designed for a reason. specs do affect overall operation of your bike.