Many think the kevlar belt is stronger then the regular polyester cord belt. Kevlar will withstand more heat and stretches more than polyester cord. I have run both on my buggy with sucess. However when dirt dragging my buggy with constant break torque and acelleration I found the polyester belt will stretch by the end of the evening where as the kevlar does not. If you run in sand, hill climb or drag the kevlar is the better belt and is not necessary for average ridding.
TOM
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