Amazon.com: Venom Power Atomik RC Alloy Ultra Shock Cap, Blue fits the Traxxas 1/10 Slash 4X4 and Other Traxxas Models - Replaces Traxxas Part 3767 : Toys & Games
Amazon.com: Hobbypark Aluminum Shock Caps (fits Ultra Shocks) & Short Rod Ends for Traxxas RC Cars Trucks Option Hop Up Parts (Red) : Toys & Games
TRAXXAS SHOCK CAPS, ALUMINUM| Limitless R/C
Traxxas Aluminum Ultra Shock Cap (Red) (4) [TRA3767X] - HobbyTown