all fronts.. In Africa the R 75 adopted a distinctive special air filter for sand (that looked like a helmet) located above the tank. The picture shows a BMW R 75 with the tropical air filter, and all the equipment of his driver onboard (see the helmet, gas mask canister and overcoat). The bike had the typical leather bags on the rear weel, and was painted in a worn coat of yellow-brown (RAL 8000) over the dark gray base (RAL 7021). The bike had the usual standard license plates and DAK insignia on both sides of the tank, and probably belonged to a reconnaissance unit.all fronts.. In Africa the R 75 adopted a distinctive special air filter for sand (that looked like a helmet) located above the tank. The picture shows a BMW R 75 with the tropical air filter, and all the equipment of his driver onboard (see the helmet, gas mask canister and overcoat). The bike had the typical leather bags on the rear weel, and was painted in a worn coat of yellow-brown (RAL 8000) over the dark gray base (RAL 7021). The bike had the usual standard license plates and DAK insignia on both sides of the tank, and probably belonged to a reconnaissance unit.