[Make my bike go faster]

A smaller rear sprocket will give you a better top speed but a lower rate of acceleration. I wouldn't mess with the engine. I would recommend that you get a bigger cc bike. I assume that you have passed your test as you mention motorway riding. If you have not passed you test I would still say that get the test done and but a bigger cruiser is the best option.

Thanks for your advice ;-)

[Make my bike go faster]

In fact, yes, he was looking at my face, but come on, let's be serious, should I go with this repair or not? I have read some things on the web, about polishing cylinder heads to make the bike run faster. Has anyone had anything like this done?

[Make my bike go faster]

Hello there,

I have had my Dragstar 125cc for about a year. It is 8 years old. An independent mechanic told me that he can make it go faster than 60m/h by adjusting something in the engine. I am sick of being left behind when on Motorway and want to go faster. Would you recommend doing those adjustments or not? can this harm the bike in any way?

Thanks anyone