I've just replaced my drive belt with a genuine Yamaha part. At a little over 87,000k's it was squeaking badly and very noisy. It was an easy job, took less than an hour all up. The original belt is in goood condition, but very glazed looking. There are no nicks, or chips in the old belt, which is surprising considering where I have ridden my Bolt. I'm still really happy with my bike.