The Arrowmax AM-910015 topdeck is an aftermarket 2.0mm Hard Type 2 plate made for the XRAY T4 mid-motor layout. It serves as the structural upper plate between the front and rear bulkheads and its harder profile reduces unwanted flex to help sharpen steering precision and roll behaviour.
This component is aimed at XRAY T4 MID chassis and is intended for chassis-level tuning on model vehicles. Fitting means swapping out the stock topdeck and carrying over your existing mounting hardware to keep the original geometry intact. Confirm compatibility with your specific T4 edition before final assembly.
Use this topdeck when you want a firmer upper plate to cut chassis flex on XRAY T4 MID cars; test it on your local circuit to decide how it affects overall balance and setup choices.
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