Product guide

How do I rebuild an RC ball differential?

By the Rhodex RC Line product team (IGNIS Overseas Ltd, Isleworth, UK). Claims reviewed by IGNIS Product & Compliance on 14 Nov 2026. Last updated: 14 November 2026.

Short answer. Strip the ball diff, clean the balls, rings and thrust bearing, then grease the diff rings and balls with Rhodex RC Line Ball Diff Grease and the thrust bearing with Moly Thrust Grease, as the kit manual shows. Set the diff tension after reassembly.

Key facts

  • Product: Rhodex RC Line Ball Diff Grease
  • What it is: Ball Diff Grease
  • Made for: Ball differential rings and balls
  • Not for: Gear diffs (use diff oil)
  • Who makes it: Rhodex is a brand of IGNIS Overseas Ltd, Isleworth, UK

How to do it

  1. Strip and clean the part.
  2. Apply a thin layer where the kit manual shows.
  3. Reassemble and check it moves freely.

When to choose something else

  • Thrust bearing: Moly Thrust Grease.
  • Gear diffs: Silicone Diff Oil.

Common mistakes

  • Over-tightening the diff screw.

Sources

Your equipment maker's manual

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