Universal Pulley & Brake Rotor SpacersUni 1 3 4" hub spacer 84 99 5 16" holes Many wide wheels require spacing of the rear pulley or chain sprocket to get the those in line with the front pulley or sprocket. Zodiac now offers spacers as universal as they can be made in four different sizes. Each of these spacers can be machined down to the next size under without having to worry about the spigot alignment. Just machine the face of the spacer down to the desired thickness. Spacers are