Kyosho UBW009 - Carbon Composite Rear Sus.Arm (RB7.5/ZX7.5)  [KY-UBW009]

Carbon rear suspension arm for RB7.5/ZX7.5

This is an RC-scale carbon composite rear suspension arm intended for RB7.5 and ZX7.5 chassis. The piece is a direct replacement/upgraded structural arm that affects rear suspension geometry, load transfer and tuning adjustments without altering other drivetrain components.

Made from carbon composite material as indicated in the product name, the arm provides localized stiffness and weight savings compared with some polymer parts. It is presented as a spare/hop-up part for hobby use, intended to be fitted where the original rear suspension arm locates on the RB7.5 or ZX7.5 layouts.

Installation notes: remove the wheel and disconnect the rear hub as required, retain or reuse the existing pins and fasteners unless the seller specifies included hardware, use a proper hex driver for screws and verify alignment and free movement of the suspension and hub bearings after fitting. For setup tuning, treat the arm as a geometry change—check ride height, camber and toe after replacement and make incremental adjustments to dampers and linkages to re-establish desired handling.

This part is presented as a direct carbon composite rear arm for RB7.5 and ZX7.5 RC chassis, serving as a component for suspension maintenance and tuning rather than a standalone upgrade kit.