TRF421X Tension Adjustment Nut - 9803478 Tamiya for 42391  [9803478]

Price:
AUD$0.00
Brand:
Tamiya
Model:
9803478
Please kindly input your name and email address, we will inform you once we have the restocking.
Or you may find similar product under the
category
Write a review

Fine-tune tension on TRF421X

This replacement tensioner nut is a small RC-scale component intended for the 42391 TRF421X assembly. It performs the basic function of setting and holding tension where the factory nut sits, allowing repeatable adjustments during chassis setup and maintenance.

In everyday use the component helps you dial in drivetrain belt or linkage tension and maintain consistent clearance across the affected area. As a replacement-style part, check the 42391 TRF421X mounting geometry to confirm proper fit before completing installation.

Fitting is straightforward: thread the nut onto the designated interface, adjust to the required tension or gap, and test for smooth drivetrain or linkage motion throughout its travel. Perform a final check under rotation to confirm the adjustment remains stable.

It gives a repeatable anchor point for tension adjustments, which helps tune drivetrain response and reduces setup variability between runs.
Yes, it is designed as a replacement-style nut for the 42391 TRF421X assembly, but confirm the mounting fit before final assembly.
If installed correctly and set to the intended clearance, alignment should remain unchanged; always recheck alignment after setting tension.
Verify smooth movement through the drivetrain or linkage travel, and confirm the tension setting holds under rotation and load.

Copyright © 2008-2026 rcjaz.com.au All rights reserved