RC crawler enthusiasts, this brass axle cover upgrade is exactly what your TRX4M needs for better performance on tricky terrain! Made from high-quality brass that's CNC machined for perfect precision, these covers add 24.4 grams of weight to your chassis which makes a huge difference in stability when climbing. The extra weight lowers your center of gravity and helps prevent those annoying rollovers on steep inclines. Installation is straightforward - just basic tools needed and you can have them on in minutes. They're specifically designed for the 1/18 scale Traxxas TRX4M Bronco and Defender models, so you know they'll fit perfectly. Beyond just functional benefits, they look seriously cool too - the black brass finish gives your RC a more professional, high-end appearance. The package includes two axle covers (front and rear) plus all the necessary screws. If you're tired of your crawler tipping over on challenging courses or just want to improve its crawling capability, these weighted axle covers are one of the most effective and affordable upgrades you can make. They really do make noticeable difference in how planted your vehicle feels on rocks and obstacles. Definitely recommended for serious crawler fans!