Ok so I did a stupid thing a while back and put a vm20 and tecno pipe on my mb5. What I will say is it was better stock. With the stock gearing it made 5th gear hard to pull and was really cramping my dubs riding ability. had I not spent the money on the parts I would not have them on my bike and would have been perfectly content with how it was. I got greedy and asked for more. What a silly thing to do.