The wheel with a convex side is the inside. Two stainless steel washers are used on the inside of the wheel.
The two-wheels design is more stable, multiple positioning holes allows the angle to be adjusted freely. Select higher angle is better for flipping and lower angle is more stable.
It's easy to install with the original position hole.
4 bearings install to the positon of the wheel.
What you see in the main picture is what you will receive.
Description
Double Wheel Aluminum Adjustable Wheelie Bar For Traxxas 1/10 E-Revo E-Revo2.0 Silver