I have this bike. its amazing.The base model with the Track Pack is very good and will probably satisfy the majority of riders. The adjustable suspension is largely geared towards those who will run track days on the Duke. That said, advanced riders who know what they’re doing will miss the ability to tweak their suspension to suit road conditions. Other bits, like the slip-on and the rearsets that I didn’t mention in the review, can be bought from the Duke catalog. You could also pop for the fancy triple clamp, but I don’t think it offers any functional difference. you must purchase