do you have a version with encoders?

I am using 4:1 Metal Gear motor 25Dx67L mm HP 12V with 48 CPR Encoder
( https://www.pololu.com/product/4844) . Two of these fit nicely in the Devastator chassis. I have not looked extensively, but I expect there are very similar options available here through DF Robot, too.

Hey Teymour,
We do not recommend changing the gears yourself. However, we do have a variety of gear ratio motors on our site that you could take a look at.

Hello, I am looking for the datasheet of this motor. I'm looking for how fast this motor reaches its maximum no-load speed. Maybe a graphic that describes the behaviour of this motor? Thanks.

At present, there is no suitable motor with encoder for Devastator.
Thank you for your Suggestions, which will be considered in the next version.

https://www.dfrobot.com/pro...

Yes, actually we have the Devastator with metal DC geared motor, this motor is the same for the one in that platform.