1. stage 1
2. stage 2
3. crest spin brush
4. redline series
5. x-treme v-locity
6. stage 10
7. home made motor(explain how u made it)
8. other(tell me)
I went through the hastle and I would personally say NO. If you want a real power boost go with a external turbo or a 5th or 6th cell mod. Plus with the spin brush you have to get the pinioins from the other motors. It's not fun.