Item #70221  The standard width on our 1/25 scale fenders is 24.40 mm, the standard width on 1/24 is 25.07 and the standard width on 1/16 Scale is 38.00 mm wide. We can also custom build the fenders of your choice, simply email us your required measurements to threedconcepts@yahoo.com. Pick your fender pick the mounting bracket that is right for or you. The standard measurements of a double radius fender is 24 (H) X 105 (D) X 25 (L) mm +/- 1.00 mm.