Tamiya 51739 - TRF421 Upper Arm Replacement Set  [51739]

Fine-Tune Your TRF421 with Genuine Tamiya Upper Arms

The Tamiya 51739 Upper Arm Spare Parts are made to match the TRF421 chassis geometry, providing a dependable replacement for racers and hobbyists who need a precise fit. These components restore suspension alignment and help maintain predictable handling when you are preparing the car for a race or a practice session.

Machined Fit for Consistent Handling

Manufactured to tight tolerances, these upper arms give consistent mounting points and repeatable results lap after lap. Use them to replace worn items or to keep your TRF421 setup consistent across adjustments and tyre changes.

Simple Swap for Setup Work

Installation is straightforward, so you can get back on track quickly. The Tamiya 51739 parts are suitable for routine maintenance and offer a reliable option when tuning suspension geometry or replacing fatigued parts.