Fit the GPM MKV6041S input shaft cup, manufactured in 4140 carbon steel, to reinforce the drivetrain on your ARRMA KRATON 6S EXB. The part is made to keep the drive engaged even if the attachment screw works loose, and the Safe-D layout joins the input gear and drive cup for dependable power transfer. A practical upgrade for hobbyists who want a tougher, longer lasting drive component.
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