I just received and installed the arrow mid pipe and cf slip ons today. Wow!!! The bike sounds soooooooooo good....maybe even mean now. I loved the sound of the original system, but wanted to remove the stock collector box and figured I'd try the arrow slip ons too. I have a new ecu to install yet and have hopes of low rev throttle improvement. The system went together pretty easy...minimal curse words were needed. I will clip a few photos from the video I shot this afternoon to share. I purchased the kit from Evolution Bike and had it in hand in about 3 weeks.