Tamiya TRF421X Upper Bumper Plate O-TCP013 Compatible Upgrade by Factory Pro  [FP-O-TCP013]

Replacement upper bumper plate for TRF421X

The Factory Pro FP-O-TCP013 is an aftermarket graphite top plate produced for use with the Tamiya TRF421X chassis. It sits above the front bumper and attaches using the standard TRF421X mounting points.

Graphite reduces local flex at the bumper mount while remaining light, which can stabilise front-end reactions to abrupt inputs. The plate alters the distribution of impact forces and chassis twist across the front end.

Fitment follows the TRF421X factory pattern and should use the original screw locations and hardware. When installing, align the plate before final torque, avoid overtightening near composite areas, and confirm clearance to the servo and suspension through full travel.

Handling notes: moving from a softer brace to this graphite option tends to sharpen steering response and may lower chatter on grippy tracks; combine the swap with incremental caster and damper adjustments to dial in balance.