With so many aftermarket companies racing to get their products to market first, they sometimes don't realize that they are creating new problems by trying to resolve others. This is quite evident with clutch belts blowing due to improper spacers -- as even something as simple as a washer can screw everything up. A lot of aftermarket clutch kits will tell you to remove the spacer (washer), but this will lead to other problems in the clutch belt. The reason to remove the spacer is to get more top end speed/ higher RPM. When you are in the higher RPM range, however, the belt is allowed to move too far and will run against the inner shaft of the secondary. This causes the belt to get too hot and will blow the belt. The spacers prevent the belt from moving too far and keeps that gap in the secondary, which in turn results in longer belt life. So if a spacer is going to result in more reliability, we suggest reinstalling them back in, and in the case of the non-turbo RZR, even adding a second plastic washer. It really just boils down to your preferences as the owner. If you want the speed and don't mind replacing the belt more frequently than that's fine. But if you want more reliability and are willing to sacrifice speed/power, it is a personal choice that you must make. The problem is that many people are following the recommendations of a "professional" and not knowing what they are getting themselves into. So if you have any questions about buying, installing, setting up, or tuning your RZR clutch, don't hesitate to contact us and we'll make sure you get the job done right!