Kyosho MR-03 Narrow Front Upper Suspension Arm MR3-19/BU by 3Racing  [MR3-19/BU]

Narrow-profile front arm for Mini-Z MR-03

The MR3-19/BU narrow upper suspension arm is an aftermarket Mini-Z component for Kyosho MR-03 chassis. It narrows the front linkage layout to change handling and steering feel while remaining a pure RC tuning part.

Compatibility is restricted to MR-03 variants that accept the narrow upper arm form factor; where the chassis layout supports it this arm will act as a direct swap or a tuned alternative to the stock upper link.

Installation is simple for those familiar with Mini-Z maintenance: remove the factory upper arm, check ball studs and bearing seats, mount the MR3-19/BU in the correct orientation and then verify steering travel and toe settings. Small adjustments to steering linkage or anti-roll may be needed.

Tuning effect: the reduced front track changes steering responsiveness and turn-in balance, making this arm useful when fine-tuning front-end grip and steering centre for specific tracks or driving preferences.