A serious issue with most currently available wheelie bars is the inability to use the truck as an off-road vehicle because most wheelie bars tend to stick out too far behind the truck. The RPM Low Visibility Wheelie Bar solves that problem! Since our wheelie bar and included wheels sits inside the protection of the rear bumper, they don't stick out allowing the truck to function normally when ripping' up the local track, yet still do their job when the occasional heavy finger pull yanks the front wheels off of the ground!