These are Optional Black Lower Spring Cups that fit most Traxxas & Losi shocks These cups fit on top of the shock end and hold the spring.
These are Optional Blue Lower Spring Cups that fit most Traxxas & Losi shocks These cups fit on top of the shock end and hold the spring.
The Traxxas Ultra Shock rebuild kit includes everything that is needed to rebuild two UItra Shocks, as used by Slash, Rustler, Stampede and many other Traxxas models. The package includes silicone o-rings, rubber diaphragms, c-clips and spacers.