This is a HPI 103663 Cup Joint 5X13X20mm

Genuine HPI quality spare part for easy maintenance and repairs. See below for kit reference.

THIS PART FITS THE FOLLOWING KITS / PARTS:
Vorza Nitro Buggy
Vorza Flux Buggy
Vorza S Flux Buggy
Vorza Nitro Truggy
Vorza Flux
Vorza S Flux