I have one, and love it! Used it for trails, mx, and now drag. Just remember it will not make any more power, but will make the power u have more "on tap". Banshee's love to rev, but the stock flywhell is heavy, which slows the revs down, when u lighten it, the bikes is able to rev faster. If u play ride alot, then this is the mod for you, or anyone as a matter of fact......
When your ready, i highly suggest sending it to Boonman, his work is awesome and the price is too!