This aftermarket cup joint is a direct-fit RC-scale replacement designed for the SSLA1280FST front CVD universal swing shaft on TRAXXAS Slash 4x4 models. The part uses spring steel as noted in the product name to provide a metal option compared with the softer stock cups.
Installation is straightforward for anyone comfortable with front hub and CVD removal: remove the front hub and swing shaft assembly, extract the worn cup joint, fit the replacement cup, and reuse original fasteners and retainers unless they show damage. After reassembly verify free rotation and that all fastenings are secure before operating the vehicle.
As a repair and tuning component, the spring steel cup joint helps restore front drivetrain integrity after wear or breakage and gives a more predictable response during track sessions or bashing. It is supplied as one pair as indicated in the original product name and should be used only on the RC models listed in the title.
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