HPI Differential Outdrive Ring (Orange) (4)

This is a set of four replacement HPI Differential Outdrive Rings, and are intended for use with the HPI Cup Racer family of vehicles. These Differential Outdrive Rings are lightweight aluminum parts that help strengthen the diff cups on Cup Racer cars. In addition to protecting the diffs, they're orange anodized for a custom look. Each package contains four rings.