Tamiya 50978 TB Evo III Spur Gear Upgrade Set (90T, 96T) SP-978  [50978]

Tamiya 50978 - TB Evo III / 3 Spur Gear (90T, 96T) SP-978
Price:
CAD$9.52
Brand:
Tamiya
Model:
50978
GTIN:
4950344509782
Condition:
Brand New
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Durable Spur Gear Replacement for TB Evo III

If you want a straightforward gearing upgrade for your Tamiya TB Evo III, the Tamiya 50978 Spur Gear Set provides two direct-fit Delrin gears with 90 and 96 teeth. These moulded Delrin pieces are built to resist wear while keeping friction low, giving consistent performance over many runs.

Why Delrin Works Well

Delrin combines strength with low friction, making it a go-to material for spur gears in on-road RC racing. The black finish is practical and helps hide wear, while the two tooth counts allow quick changes when tuning acceleration or top speed goals.

Fitment and Quick Swap Installation

The Tamiya 50978 set is engineered to fit the TB Evo III chassis without modification, enabling fast gear swaps during setup or maintenance. Hobbyists will find the changeover simple with standard RC hand tools and minimal disassembly.

Which TB Evo III variants work with these gears?

These gears are made for the TB Evo III chassis as supplied by Tamiya. They are intended for the stock layout and may not fit heavily modified transmissions without checking clearances first.

Do I need special tools to change the spur gear?

No special tools are required. A standard RC toolkit with hex drivers and basic wrenches is enough to remove the gear and refit the replacement from the 50978 set.

How often should I inspect the Delrin gears?

Check the gears after several race sessions or if you notice noise or slippage. Delrin holds up well, but regular inspection for tooth wear and correct mesh will prevent issues.

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