The Tamiya 4004080 wide battery holder is built to take wider battery packs and lock them into place on the TRF417 chassis. That reliable fit helps maintain consistent balance so your car behaves predictably lap after lap.
By securing larger batteries, the Tamiya 4004080 reduces unwanted lateral and longitudinal movement that can upset handling. The result is steadier corner entry and better repeatability for setup tuning.
Mounting the wide holder to the TRF417 is straightforward and does not demand chassis alterations. It is an accessible upgrade for drivers looking to improve reliability and battery security with minimal fuss.
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