I just recently bought a tranny for my maxx. I searched all over for one with no luck. So I posted on Traxxas' Market Place and this guy sent me a message saying he sells brand new trannys for $60.50 with the slipper/spur gear included shipped or $53.50 shipped without the slipper/spur gear. His name is Gary and his e-mail is
kvrcparts@yahoo.com.
Hope this helps.