Two-tone "Double Density" handles from Progrip. The basic colour of the handles is grey with corresponding colour accents. The grips fit virtually any motorcycle handlebar, so they can also be used on street bikes.
The mounting of handlebar grips is actually very simple. Idr. the old grips must be cut down, since the original adhesive can hardly be loosened. Then degrease the handlebars well (with e.g. brake cleaner) and spray the new grips with plenty of hairspray from the inside. Then push them on firmly, align them and let them dry for at least 1-2h.