Tamiya TRF421X Rear Upgrade Split Upper Deck Graphite 1.6mm - O-TCP012S by Factory Pro  [FP-O-TCP012S]

Durability and Fit: TRF421X Rear Deck

This aftermarket rear split upper deck is designed for the Tamiya TRF421X touring car and comes as a 1.6mm graphite plate to reduce weight while allowing setup variation. As a hop-up component it changes the way the rear portion of the upper deck couples to the chassis, enabling controlled adjustments to local flex and balance without altering stock attachment points.

Mount using the chassis' original upper deck locations and the supplied fastener pattern; inspect clearances and alignment before final torque. The split profile alters load transfer through the rear assembly, so careful checking of mating surfaces and minimal shimming is recommended to maintain predictable load paths.

Intended as a chassis setup aid: replace your stock deck to evaluate handling differences, or pair it with alternate deck thicknesses and rear hardware to refine traction, rotation, and transient response. This item is manufactured for RC-scale TRF421X kits and should be used as part of a setup toolkit rather than a generic replacement body piece.