SWEEP SPIRAL 1.9 Inch ALUMINIUM BEADLOCK WHEELS SILVER (2PC)RPM customers have reported durability and performance issues with the stock bumper wheelie bar mount on the Rustler 44. What we found was, the bumper wheelie bar mount is simply too flexible to allow the wheelie bar to work effectively, yet still fragile to the point of needing assistance from RPM. Our fix? We eliminated the rear bumper wheelie bar entirely! Instead, we opted for more adjustability and a solid mount that allows a wheelie bar to work