This upgrades theCycleOps aluminum roller to make it less likely you will fall off the side of your rollers. No modifications to CycleOps rollers are required, these fit on using the stock hardware.
roller stops.STL should be used for the front wheel roller - print two of these
roller stops minus 20.STL is tilted backwards by 20 degrees - print two of these for the back of back wheel rollers
roller stops plus 20.STL is tiled forward by 20 degrees - print two of these for the back wheel rollers.