Front and rear bumper for the Maxtronic Stunt RC car, which you can find on amazon at the following link (I'm not affiliated with them in any way):
https://www.amazon.com/MaxTronic-Amphibious-Control-Rechargeable-Rotation/dp/B0C5HCX4J6/
My kid loves this car but keeps bashing it all over the house. Drives my wife crazy. It's a fiasco over here.
This front or rear bumperminimizes the destruction. I used a couple of 2mm wide zipties to secure to the roll cage - be sure to snug it down tight. I recommend using something high quality as a lot of cheap zip ties wont hold up in this application.
The point of this bumper is to minimize noise and impact to the hard RC car body. You'll want to use TPU for this print. I recommend 5-10% gyroidal infill but feel free to experiment. Please let me know of your recommendations if you find a good setting.