The Factory Pro O-XCP008 Scythe Type option upper deck is designed for the Xray T4-21 chassis and functions as an RC-scale hop-up to change upper chassis stiffness and balance while leaving core drive parts unchanged.
The component acts as an upper deck option that redirects load between the shock towers and the centre of the chassis, allowing finer control of flex behaviour across different track surfaces. Apply changes one at a time and record lap times and handling differences to judge the deck's effect accurately.
This optional upper deck suits hobbyists wanting to tune chassis flex and balance on the Xray T4-21; confirm fit and any required mounting hardware before using on the track.
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