A new replacement throttle cable for mini bikes like the Monster Moto / Mega Moto Classic 105cc and MM-B80 80cc will do wonders to improve your mini bike's response.
A good throttle cable is an absolute must on any mini bike, but like brake cables, throttle cables can eventually stretch, bind, kink, or rust. If your Monster Moto / Mega Moto MM-B80 mini bike's cable begins to give problems you need to replace it as soon as possible; it simply won't get better on its own.
Again like brake cables, throttle cables offer a little leeway when it comes to proper length. Of course you don't want it too short, a barely reaching cable will soon pop out and possibly break your throttle in the process. A cable that is too long will work but it may quickly snag and get in the way. The best throttle cable is a happy medium and the best will replicate the length of the cable on a new mini bike; two or three inches longer than you absolutely need.
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Proposition 65 Warning