If you’re a YZF R125 owner, especially if you’ve had the bike for a while, then you’ve probably started to think about ways to get more power out of it. Aftermarket exhausts, air filters, and even big bore kits all can be common mods. But there's a lot of debate about whether it's worth the investment on a 125cc bike. However, some say the gains are small and not worth the cost or possible reliability problems. They say that even a small amount of increase in power can make a big difference to the riding experience of a small displacement bike. The legality of some mods as well is also a question, as some mods may go beyond the limits for learner riders in certain countries. So, let’s jump in and discuss the pros and cons of supercharging a YZF-R125 for performance.