[mt_enthusiast]

Dan @ ultramaxxed has had a couple of sets made since some said they weren't going to be made any longer. I'd suggest you contact him about whether he will have them made from time to time. He's got three sets in stock now. You could just start with the idlers from Mike and upgrade to the UltraMaxxed if necessary. I'd say it also depends on the motor/ESC. For the HV-Maxx, the UltraMaxxed isn't needed IMO.