Boost your RC crawler's performance with these brass portal axle housing weights! Designed specifically for the front wheels of 1/10 scale YK4102, YK4103, and 1/8 scale YK4082 RC crawlers, these weights lower your vehicle's center of gravity for better climbing and stability on tough terrain. Made from solid brass, each pair weighs 53 grams, adding just the right amount of heft without overloading. The weight system is precision-engineered for easy installation—just attach them to your portal axles using the included screws. You'll notice improved traction and less tipping on rocky or steep obstacles. Whether you're a hobbyist looking to fine-tune your rig or a competitor needing an edge, these upgrade parts are a game-changer. Note: Always check compatibility with your model before ordering. Get ready to conquer those trails with confidence!