The JAZRIDER JR-KFZ201-GU aluminium centre shaft cup joint in gun metal is intended as a durable replacement for the Kyosho Fazer Mk2 FZ02 original cup. It provides a stiffer, more wear resistant interface in the central drivetrain area while remaining easy to service.
Install on clean components, ensure correct seating and avoid over-tightening fixings. During routine checks look for any lateral play and verify that shafts rotate freely without binding.