HPI P-3 Silicone O-ring (Red) (5)
[HPI6819]

HPI P-3 Silicone O-ring (Red) (5)
Jack Knapp - Rating: 5 of 5 Stars! Verified Owner Friday, May 25, 2012
They are also used in the E Firestorm as a cushion at the end of the dog bone on the wheel side.