I planned to start sumo robots from long time. After that I see that kit and with help of email support I chose to order. Overall process (shipment time to Ecuador) take 11 days. I waited jsumo team little for assembly. If I came to robot. It works fast, uses 11 magnets (It don't have bottom photo at page). Front wedge uses razors (careful very sharp). It makes retreat tactics well. Code is well written. ( I am noob at Arduino coding) Five JS200XF sensors are now enough but I plan to add 2 more sensors to corners. Motor drivers are work very fast I didn't feel any delay. Wheel diameter is 45mm x 30mm thickness (gear attached directly to wheel)

Perfecto! I am using it for non-magnetic sumo robot. But aware it doesn't come with blade. Order seperately.

I used this at my custom robot controller and now it works very well without any problems. Lots of connectors, easy to connect.

I tried Arduino Uno and custom driver for my project but later gave up due to electrical problems. After that I saw this board with my friend's suggestion. This XMotion supplied very high aesthetics and power. (Just make a math on currents!) Also thinner. One drawback is back soldering of controller. I hope they can update that too.

I am planning to use in Microsumo robot. Today I received and uploaded first blink Hello world Code. Everything is ok.

I liked the design and steel construction. Very durable. All parts arrived to me complete. Bearings was attached readily to body.

I am using them for my mini sumo robot. I also used Pololu and fingertech series too but this have good torque and speed. Also shipment to Romania was very quick just faced a delay at cargo office (Shame on DHL)

I ordered for sumo robot. Works well as expected.

I hope you can manufacture 4mm hole models for 25mm pololu motors.

Very flat and soft. I am using wet towel for cleaning. My only recommendation to new buyers is add extra spare wheels too. And make cleaning well.