These rear upper suspension arms from JAZRIDER are produced to match the mounting points of the Tamiya TT01 and TT01E chassis, providing a straightforward aluminium replacement for the stock components. The alloy construction reduces flex and improves impact resistance compared with plastic originals, while the red anodised finish offers corrosion and abrasion protection. Installation is a direct swap with factory mounts, making these arms a sensible upgrade for hobbyists who want improved durability and consistent handling without complex setup changes.