e racing mountain bike r8 flex iiiDYNAMIC AND POWERFUL The SachsenRAD E Racing Bike R8 Flex III is the modern answer to sporty e mobility for city and off road. Strong frame in unique design The aluminum frame of the E MTB R8 Flex III is made of the same material that is used in the aviation industry. The frame is the ultimate combination of strength and lightness and houses the battery in an intelligent way. The sporty design of the frame makes you and your bike a dynamic eye