If you want crisper cornering and fewer surprises on the track, the Tamiya 4004080 wide battery holder is built to accept larger packs and lock them securely in place. Its snug fit prevents battery movement so you can focus on tuning and lap times rather than pack shifts.
The Tamiya 4004080 is designed to improve weight distribution by keeping wider batteries stable under hard acceleration and braking. A firm battery mount reduces roll and helps the TRF417 maintain predictable traction through corners.
Fitting the Tamiya wide battery holder is straightforward and requires no major chassis modification. It installs directly into the TRF417 layout, making it an easy upgrade for hobbyists looking for a durable, track-ready solution.
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