Hi Kev, I'm 6'5" and am one of those nuts who do 1,000 mile days rides from time to time. Have just moved over to a new 2021 GSA from a K1600 GTL. I could,t put peg lowering in on the GTL, ground clearance was insufficient grinding the pedals especially in tight twisties on a regular basis. The GSA in my very limited experience so far has far more ground clearance and so I took a chance and went with the Wunderlich 50mm EVO lowering set and new footrests. Yesterday I took the bike out through the mountain here in Austria and had no problem with clearance. As my confidence in the bike grows and I pick up speed and lean angles we will see but I do not envisage a problem ;-). The lowering does make a remarkable difference to comfort on the plus side. I also bought the Wunderlich Brake and Geat levers that can be extended. They are needed as a combo with the lowered footrests. Haven't fitted them yet, changing gear was a little difficult yesterday requiring me to raise my foot to change down. The new gear leaver will solve that. Will report further.