TRAXXAS Slash 4x4 Spring Steel Cup Joint for Rear CVD Universal Swing Shaft by GPM SSLA1277R/JT  [SSLA1277R/JT]

Slash 4x4 Rear CVD Cup Joint

This spring steel cup joint is an aftermarket replacement part made for the rear CVD universal swing shaft on 1/10 TRAXXAS Slash 4x4 vehicles, sold under GPM model SSLA1277R/JT. It is an RC-scale drivetrain component intended to interface with the SSLA1277RST rear CVD assembly and serve as a direct-replacement cup joint for that specific rear universal swing shaft.

Material and role: the part is described as spring steel, a common choice for cup joints where torsional resilience and wear resistance are important in small-scale drivetrains. As a cup joint, it transmits torque between the differential output and the rear driveshaft while accommodating limited misalignment from suspension movement.

Installation and tuning notes: designed to replace the factory cup joint on the SSLA1277RST rear CVD swing shaft, the unit is fitted into the rear CVD housing using the vehicle's existing retention points and hardware. During installation, check for correct seating and smooth rotation through the suspension travel, and confirm there is no binding or excessive play. For tuning, swapping to a stiffer or more wear-resistant cup joint can change drivetrain feel under load and is typically part of drivetrain maintenance or incremental performance adjustment.