Originally Posted by
nikos2002
Guys, if you have questions or comments about another mfg products please use their thread or contact their service.
Viper has only and will only recommend that the VTX10R run on 540 and 550 2-pole motors. We have a 4 pole unsensored system - Copperhead as an alternative if others like.
Thanks. I installed my 4.5 550 Novak and everything works just fine. I will keep the RX8 with the PRO4 for my outdoor Losi.