RC crawler enthusiasts, listen up! These INJORA brass diff covers are exactly what your TRX4M needs for better performance. Made from solid brass with a sleek black coating, these 11-gram covers replace the stock plastic ones to significantly lower your crawler's center of gravity. That extra weight down low makes a huge difference in stability - less tipping on those tricky climbs and more confident crawling over obstacles. The CNC machining is precise, giving you perfect fitment for both front and rear axles on TRX4M Defender, Bronco, F150, and other 1/18 scale models. The black coating isn't just for looks - it prevents corrosion and adds durability. Installation is straightforward with the included screws, and the chamfered edges give a professional finish. If you're serious about improving your crawler's performance without breaking the bank, these diff covers deliver noticeable improvements in traction and stability that you'll feel immediately on the trail!