I changed my stock bars to Heli Bars a few months ago and what a difference, much more comfortable riding position for a start. I also modified my seat with both of these mods I have the perfect setup. These mods have improved my bike in a positive way although it did take me about a week to adjust to the new bars (felt like riding motocross) I am a spirited rider but don't do track days. I would not go back to the stock bars at all. Some IOM TT riders (road racers) have modified bars so that must tell you something. If you are on the race track that is a different story. With Heli bars you also don't need to change any cables...bonus.