I really like the look of these but heard they reduce power? Did you experience that ?
To my eye, one of the best looking slip-ons for the 790, and sounds awesome, while still being Euro 4 compliant - so won't get you in trouble with the law! I've read that all of the shorter slip-ons cause a slight loss in power, maybe something to do with less back pressure than the stock system? If there was a loss, it wasn't enough for me to notice it.