Front Direct Cup Spare for TRF421/TRF421X - Tamiya 51763  [51763]

Part specification and chassis compatibility

This set of front direct cups is supplied as a spare compatible with the TRF421X chassis and may be used as a replacement on TRF421 platforms. The kit contains 2 pcs front direct cups and 2 aluminum collars per the manufacturer listing.

The components are steel front direct cups intended to increase drivetrain rigidity when installed. For proper installation on a TRF421 chassis, 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 are recommended to ensure full compatibility.

Fitment is restricted to the listed RC chassis models; verify part numbers against your build prior to fitting. These items are intended for part replacement, routine maintenance, or modest tuning of drivetrain stiffness on touring car models.