This is a pack of two optional RPM Rear A-Arms, and are intended for use with the Losi Mini 8IGHT buggy. These RPM A-arms have a beveled 30° leading and trailing edge and beefed up shock and anti-sway bar mounts. The outer hinge pin support diameters have been beefed up to almost double the thickness of the stock A-arms, while a more modest increase in size has been designed into the inner hinge pin support diameters as well. Each RPM A-arm for the Losi Mini 8IGHT is molded in black out of an extremely tough blend of nylons. If speed is your thing, you need RPM armor on your ride!