it's only 27mhz. it's just a regular set. if u look at stuff like the initial-d set or just a normal set like the wrx or whatever they only ever come in 1 frequency so why would the trueno set be any different. and i dont think u can find a place that sells it no more. it took me a week of straight searching just to find those 2 sets that me and civicsport bought. during that time i pretty much looked at everywhere else and no one had it.