Front Arm (Carbon Composite) for RB7.5 - Kyosho UBW008  [KY-UBW008]

RB7.5 front suspension arm replacement

This Kyosho UBW008 front suspension arm is a carbon composite RC-scale replacement, intended specifically for assemblies labelled RB7.5. It is offered as a direct-change item for front-end suspension arrangements that call out RB7.5 parts, enabling geometry correction or measured tuning without suggesting universal fitment.

Functionally the arm changes both static geometry and transient response. Prior to fitting, confirm hinge-pin centres, the positions of mounting bosses, and any track width variation on your chassis. Minor differences in arm length or hole placement will modify camber and steering behaviour, so treat this as a geometry adjustment component rather than an instant performance upgrade.

Typical installation procedure is: remove wheel and upright where necessary, detach the existing arm at hinge and steering points, transfer any bushings or pins to the new arm if required, then reassemble and confirm unobstructed suspension travel. After installation, verify wheel alignment and wheel bearing seating and perform slow tests across the suspension range to check for binding.

When tuning, use the arm to make small, considered changes to static camber and toe. Inspect the arm at mounting points periodically and verify fastener security after a few runs. Because the component is carbon composite, take care not to over-tighten fasteners at bonded or layered interfaces to prevent local damage.