RB7.5 Compatible Carbon Composite Front Arm Kyosho UBW008  [KY-UBW008]

Carbon front suspension arm for RB7.5 setups

This Kyosho UBW008 front suspension arm is an RC-scale replacement component constructed from carbon composite, intended for assemblies carrying the RB7.5 designation. It is intended as an aftermarket swap for front-end layouts that specify RB7.5 arms, providing geometry restoration or a platform for measured tuning changes without implying broader compatibility.

The arm functions as a geometry element, affecting both static alignment and transient handling. Confirm that hinge-pin positions, mounting bosses, and wheel track match your chassis before fitting. Slight differences in arm length or mounting holes will affect camber and steering characteristics, so treat adjustments deliberately.

To install: remove wheel and upright as required, detach the old arm at the hinge and steering block locations, move any inserts or pins to the replacement arm if necessary, then reassemble and verify smooth suspension travel across its range. After fitting, check wheel alignment, bearing seating, and run through slow cycles to detect binding issues.

Use this arm for small, deliberate adjustments to camber and toe during setup rather than large, untested changes. Inspect mounting interfaces regularly and confirm fastener tightness after a few sessions. Because the arm is carbon composite, do not over-tighten fasteners at bond or layer interfaces to avoid crushing or delamination.