ok thought i would post this up for the people who want a faster rev and higer rev out, i do not recomed this if your a sissy and dont like vibes lol but any who, if you take the counter balancer out u will rev faster and higher but will cause more vibes, but considering the blaster and shees frames are basically a bike frame with four wheels u will be fine just tighten everything up tigheter than normal. if u have any ?s about it pm me i have mine out rite now and it feels no different than rideing a cr 250 as in the vibes, and it revs a bit quicker