Trying to catch up

[Blazerss]

It varies slightly from chassis to chassis, but for the most part the new transmission won't fit in the older chassis's that were made for the old 2 speed transmission. The G1-G3 it is impossible without serious modification, I have tried numerous times. The G4 was made for the new transmissions though.

If you had an old FLM chassis you can make the newer transmission fit in it.

I will say the new single speed transmissions by Traxxas are very stout. I run my truck on 5s on a completely stock transmission and have bent CVDs and stripped 1/8 scale diffs, but haven't hurt the stock trans.