The Factory Pro O-TCP003 split upper deck is tailored for the Tamiya TRF421 touring chassis. It features a 2mm graphite plate in a softer layup to influence chassis compliance and mid-corner behaviour without changing the primary chassis structure.
As an RC tuning item, the split deck alters how the front and rear portions of the chassis react under load, giving tuners another lever to control understeer and oversteer and to manage transient responses. The soft graphite adds controlled give while preserving stock geometry and mounting integrity.
Installation is straightforward for experienced touring car mechanics: remove the OEM upper deck, move over any required fasteners, and attach the split deck to the original screw locations. Check alignment with the servo, motor and suspension components and confirm there is no binding before you torque everything down.
Copyright © 2008-2026 rcjaz.com.au All rights reserved