Things You'll Need
Instructions
Open the model car kit and the model lowrider hydraulic chassis. Test the hydraulic chassis first to make sure it is in good working condition. You do not want to have to take the model apart later if there is a problem.
Read the instructions for your model car kit and your model lowrider hydraulic chassis thoroughly before beginning. When you build the model you will have to stop before attaching the body to the plastic chassis and instead attach it to the hydraulic one. Make sure you understand what the procedure will be for your particular model and lowrider hydraulic chassis.
Build the model car according to the instructions that came with the kit. Stop just before attaching the body to the chassis. Line up the body instead with the lowrider hydraulic chassis. If they do not exactly fit, use a craft or utility knife to carefully trim away the areas on the body necessary to make it fit. You will also usually have to trim away some of the plastic material where the parts attached to the kit's packing.
Screw the body to the lowrider hydraulics chassis with the screws provided. You can also attach the body using epoxy glue, which will require sufficient time to harden before you proceed.
Connect the wires from the hydraulics chassis to the control box according to the instructions. Some lowrider model chassis kits are wireless, so you do not have to perform this step. Test the hydraulics to make sure they still work.