Quite a few people modify motorcycles and the Yamaha R6 has a lot of aftermarket support. But with the bike already so high performance, there’s debate over which changes actually make it better for street use versus more cosmetic or track oriented. For example exhaust system, suspension, ergonomics or electronics are the most common areas for modification. There are those who say the R6 is best left stock for reliability and others who believe certain mods make a big difference on the street riding experience. It is usually a discussion of balancing performance gains against practical improvements for daily use, and of the cost effectiveness of various modifications.