The Factory Pro FP-O-XCP006 replacement main chassis is built for XRAY T4-21 models and is supplied with two battery mount plates to offer alternate battery positioning. This part functions as either a spare replacement or an aftermarket tuning component to shift weight distribution and refine handling.
The product is delivered as the full main chassis plate to swap in for the original. During fitment, check servo, ESC, and motor mounting alignments and inspect driveshaft and suspension pickup orientation before final clamping. Some small trimming of foams or brackets on the car may be necessary to fit the chosen battery plate.
The included battery plates act as a tuning lever: moving the battery forward or aft adjusts front to rear balance and transient response without touching suspension geometry. Always carry out a trial assembly to verify clearance and fit before track use.
For hobbyists and club racers adjusting battery placement on an XRAY T4-21, this Factory Pro chassis offers a direct swap and easy tuning possibilities; check all clearances before completing installation.
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