The Tamiya 15285 GP285 TR-1 Chassis Super Speed Gear is an upgrade aimed at improving drivetrain efficiency and peak speed for TR-1 based Mini 4WDs. It is produced to align precisely with TR-1 gearing layouts so the car benefits from smoother power delivery on straights and through transitions.
Installation requires only standard Mini 4WD tools and is achievable by most hobbyists. When paired with suitable motors and tuning, the Tamiya 15285 can help lower lap times and sharpen on-track performance.
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