No, it SHOULD be the original FX more or less. OS Engines is owned by Futaba, thus it is the chairman of Futaba, Mr. Kirai, that ultimately calls the shots for OS. Several months AFTER OS announced the discontinuation of the FX and it's replacement with the AX, and AFTER all of our discussion here, on the RCCA web board AND the Q-25 web boards, I acquired a high-level contact at Futaba USA through a mutual friend. I told him of the concern we all had and he asked me to write a letter for him to forward to Mr. Kirai. He did so and Mr. Kirai decided to bring back the FX, albeit at a MUCH higher price. (The last full retail price that I paid prior to it being discontinued was $94.) Then I saw the test results on the prototype Magnum 25XLS and its MSRP and I wrote back to my contact, gave him that information and recommended that they should NOT bring back the FX since they can not compete with the Magnum XLS at that price. It looks like it was too late and that they are going to do it anyway. While the FX is a superior engine to the AX in many ways, I doubt if they will recover the sales that they lost because they cannot compete on price with the Magnum XLS. I just hope that my contact doesn't take any heat as a result of this decision. It is just a case of too little, too late.