The XRAY 302144-C Composite Upper Arm is a practical upgrade for the XRAY X4 series, designed to improve traction and increase component longevity. This part is intended for the front left and rear right positions and gives a straightforward way for racers to refine chassis balance.
The composite construction delivers a controlled amount of flex paired with toughness, which helps deliver better forward traction and side grip. That added compliance can stabilise the front end under acceleration and through corners, making it easier to place the car on the racing line.
Built to handle the bangs and knocks of regular racing, the arm clears the inner shock position to lower the chance of damage in close contact. Its form also reduces radial play so steering input feels more precise and consistent.
The XRAY 302144-C is moulded to fit XRAY X4 models at the front left and rear right mounting points, allowing a quick swap with stock arms. Installation is straightforward for hobbyists who want a reliable handling tweak.
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