I searched everywhere on the Internet for a RC rover chassis, but everything is either too small, or way too expensive. I was glad to find this Lynxmotion A4WD1 chassis for under $100 CAD. This barebone chassis allows you to customize your robot anyway you want. The low profile of this chassis makes it a good choice for building a RC inspection robot rover. I love this chassis so much I bought a second one that's included as part of a kit with the Lynxmotion tracks. The only con is I wish the top and bottom plates are aluminum as well.