These Rapid Art Skid Knobs mount through the front engine to frame mounts for maximum strength.Longer engine bolt is provided. Holes do need to be cut in the fairing, F1E can do this service in house for $90.00. Alternativley we can supply shorter knobs which finish flush with the inside if the fairings these offer protection for the crankcases ,waterpump and radiator to a certain extent but of course not the fairings to order this option mention you want the short version in the comments section of the order form. nobs are available in black or white .Replacement knobs sold seperatley.