I purchased a used odyssey one year ago. It is lots of fun however it gets pretty bumpy on rough terrain, so I was wondering if there is any way of installing a rear suspension? perhaps an aftermarket kit ?

 

There are kits, I don't know from where off-hand. The ones I have seen are pretty simple in construction. The axles are cut near the frame and a U-Joint connects the the outer pieces back on. A pillow block (flange that holds a bearing) is mounted to an arm connected forward on the frame with a rod end. The shock mounts to the arm near the pillow block. You can get the U-Joint assemblies and the pillow blocks from a store that sells farm impliment parts.