The XRAY 326161 Foam Spacer is made for fine tuning your chassis balance by adjusting where the battery sits. It helps keep the pack from sliding and makes it easy to tweak weight distribution between runs.
Small changes in battery location can lead to noticeable differences in steering precision and rear grip. The spacer provides a repeatable way to move mass and lock the battery in the chosen spot.
For loose or rutted terrain try moving the battery rearwards for more traction. For tight, technical layouts move it forward to improve turn in. Secure the spacer and retest until you find the balance that suits the track.
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