I just picked up the performance booster upgrade kit and the custom tire hubcap kit for the zip zaps from RadioShack. I put the turbo speed motor (21,500 rpm) with the chrome hubcaps (rear only) and sport tread tires on my bit and was quite surprised. The motor seemed to have alot of pick-up for an ~ 2.2. I later tried some of the gears out and they fit in nicely. I am a little leary of the suspensionsetthat comes with it though, it seems really stiff (all 3 of them). I don’t think I will be trading in my bit(s) anytime soon but like the custom hupcap kit alot…Too bad Zip Zaps don’t have smaller front wheels:smiley13:
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