TRF421/TRF421X Front Direct Cup (2pcs) - Tamiya 51763  [51763]

Upgrading drivetrain stiffness with direct cups

This pair of front direct cups is intended as a spare for the TRF421X chassis and can be fitted to TRF421 models to increase front drivetrain stiffness. The set includes 2 pcs front direct cups and 2 aluminum collars as listed by the manufacturer.

The steel construction of these front direct cups is designed to add rigidity when installed. For TRF421 installations the manufacturer lists 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 help ensure correct fit and function.

Fit only to the specified chassis models; confirm part numbers against your vehicle before installation. These parts serve for maintenance, replacing worn drivetrain items, or making incremental tuning changes to stiffness on touring car platforms.