The Alt-Rider Upper and Lower crash bars are the best available for the Africa Twin (in my opinion). However, there is a very serious engineering flaw with the reinforcement bars (optional third piece that connects Upper bars to Lower bars on each side). Once connected, they cause a horrible high frequency vibration between 3800 and 4200 RPM. It is so bad, it will probably cause damage to the engine and frame welds over an extended period of time. The problem is that they turn the entire crash bar system into a huge tuning fork that adds harmonic vibrations at the RPM range previously mentioned. I'm going to try adding strips of weight to the reinforcement bars to act as a damper. I hope this works; Otherwise, avoid the reinforcing bars option.