i have a factory ad sheet that came with my 40 with all the new improvements added to the 250 series for 40. all the picures show hub caps front and rear for single and dual wheels. the front cap is held to the hub by a screw in the middle of the front cap. the caps for the rear appear to bolt to the hub itself or it screwed in the hole for pulling the axle out. i saw a pic of a 250 with front caps but the angle of the shot didnt show the rear.
