Do this beast has some speed limiter included? Is possible to have one of this withe a speed limiter included?
Hello! There is no speed limit, however you can change the motor output from the P settings to limit the speed.
What type of brakes does the X4 have?
X4 is a disc brake
Does the x4 have front and rear breaks? I’m reading in the discription on amazon it has a USB port to charge your phone. Where is this located? Thanks in advance!
Located near the speed display, it's easy to find
What kind of brakes, disc? Where are the brakes, front wheel, back or both? Can I choose to have both tires as solid rubber? Does it come with a 350w or 500w motor? Your site says 500w but Amazon has the X4 with a 350w motor.
The X4 is currently equipped with a 350W motor