It is a pro. It has the alum hubs and carriers and the alum radioplate, 2 speed tranny and the torq .16.
Its a very good truck, if your new to Nitro. BUT if you add more power it runs into alot of problems. With the os .18 I destroyed the diff(replaced with steel) I also stripped spurs like everyday. The external 2 speed cant handle the power because there is no slipper. So when it shifts to second it just eats 2nd gear. I also bent ALOT of hinge pins in the arms(switched to aluminum a-arms problem fixed). So its cheap enough to buy and bash and when your ready for more speed or bling dont buy it for that!! Sell it and get a newer model.
The max st pro is also very easy to work on and is a good learning truck.
Heres my old max st pro. I bought for $200(brand new 1 year or so ago) and put about $300 into it and sold it a couple months later for $200[

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It was pretty decked out but still couldnt handle the OS .18. but was faster than my Jato it just couldnt handle as well.