vorza has hobbywing combo 2200kv motor sensored 120 amp speedy. it did have 150 amp, it got wet stopped working, so I let it dry for a couple of mounths. I honestly kept it for the fan but tried lipo again, it worked so I kept it as a spare. my hpi apache c1 esc capacitors snapped off so I am glad I did kept hobbywing 150 amp. the one that blew up was a 1/5th scale s5 rtr brushless speed control generic brand ok but not real great so I replaced it with old one I had sitting there it runs awesome on 4s n 6s I bought a hpi tork motor it went awesome compared to the leopard motor 2200kv the same as the tork and the hpi would of ate my leopard motor alive and sounded bloody awesome. on both 6s and 4s 6s was ballistic I could wheelie it for a really long time like over 50 metres and at around 90 kmph on back wheels.