Tamiya 51763 - TRF421X Front Direct Cup (2pcs) Front direct cup spare for TRF421/TRF421X drivetrain  [51763]

Front direct cup replacement and upgrade

This pair of front direct cups is an RC-scale spare designed for the TRF421X chassis and can serve as a replacement part or as an upgrade option for the standard TRF421. The package includes 2 pcs front direct cups and 2 aluminum collars as listed by the manufacturer.

The parts are steel front direct cups intended to increase rigidity in the drivetrain assembly when fitted. When fitting these cups to a TRF421 chassis, the manufacturer notes compatible companion parts: Item 51761 46mm Drive Shafts for Double Cardan Joint Shafts (2 pcs) (Ball Bearing Type) and Item 51762 Ball Bearing Set for Universal Shafts, which are recommended for full compatibility with the TRF421 configuration.

Fitment is restricted to the specified RC chassis models; verify part numbers against your build before installation. These components are intended for maintenance, replacement of worn drivetrain elements, or incremental tuning of drivetrain stiffness on RC touring car platforms.