[GorillaMaxx360]

By output shaft i mean in the Emaxx trans there is the top shaft that has two gears on it they are both held together with a roll pin. This often breaks so people replace the pin with a hex wrench piece or a drill bit. If you decide to go with the Emaxx trans you will need one steel idler if you decide to go with a single speed option which is best for Brushless anyway(2 idlers are needed for dual speed) you will also want to strengthen the output shaft with a stronger pin like and Allen wrench or drill bit. You can also go with the single speed when using the Emaxx trans. I am not very familiar with the nitro transmissions but if i am not mistaken the idlers from mike wont work(but i could be wrong) and the single speed conversion would not work for sure. The RC monster idlers come separate, and the single speed comes second but these only work with the Emaxx trans i believe. O and since many people here do not use a maxx trans i am not as familiar with them but i don't believe you have to beef up the output shaft in the nitro trans but not sure. hope i helped a little.