The JR-TT104-RD front upper suspension arm is a machined aluminum upgrade made for TAMIYA TT01 and TT01E chassis. Finished in red anodizing, it replaces the original plastic part to offer a stiffer upper mounting point while maintaining the factory mounting geometry.
Installation uses the chassis' original hinge pin and mounts, so no frame modification is required beyond replacing the arms. During fitting, check steering links and shock tower clearances; stiffer arms can change suspension compliance and may require minor alignment tweaks.
For drivers focused on setup, aluminium arms like these reduce flex at the upper pivot and can sharpen roll response under load. They are aimed at hobby-grade 1/10 touring cars where consistent handling and predictable tuning are desired.
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