The Tamiya 51759 TRF421X aluminum lower deck replaces the standard lower deck for the TRF421X chassis platform. This single-piece aluminum lower deck is intended to substitute a worn or damaged unit on TRF421X (Item 42391) or be used as an upgrade when fitting the TRF421 (Item 42384) chassis.
When converting a TRF421 to this aluminum layout, install it together with the compatible motor mount specified for that conversion; the motor mount and lower deck are the matched components required for correct fitment. The product is supplied as the lower deck only and does not include extra hardware in the source listing.
Fit this 51759 deck as a like-for-like replacement on TRF421X builds or as an upgrade route for TRF421 conversions, pairing it with the compatible motor mount when needed.
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