The Traxxas 5182 Ball Bearings, 20x27x4mm are designed for smooth, low‑friction rotation and reliable performance in high‑stress conditions. Made from high‑quality steel, these bearings deliver long‑lasting durability, precise fit, and consistent operation while handling high speeds, rough terrain, and aggressive driving. Built to Traxxas factory specifications for a perfect fit, they are compatible with models including the Traxxas X‑Maxx and Traxxas Maxx, providing dependable performance and smooth drivetrain operation every time you hit the throttle.