I bought a 125 supermoto back in June, same day I cut off the old exhaust and replaced it with a yoshi can, put a cone filter on it and upgraded the main jet to a 115. my bike is currently topping at around 65mph, which isn't fast enough for me, but short of paying out a couple of grand to do a full bike test and get a bigger bike and insurance (I'm only 17 so insurance would be ridiculous), I can't think of much else to do, speed wise. there's COUNTLESS things im in the process of doing with the bodywork, but as for the engine, aside from the standard exhaust and filter, everybody seems extremely vague about what works and what doesn't. I was wondering if there was anyone who could set out a list of things proven to increase speed and power. thanks in advance :)