Traxxas 5151R Center Driveshafts E-MaxxProduct DescriptionTraxxas Steel Constant Velocity Center Driveshafts are designed to handle the extreme horsepower and articulation. The inner and outer U joints are lubricated and sealed by a rubber boot for maximum protection against the elements, and the U joint pins are held captive by a lightweight aluminum sleeve so you never have to worry about losing a pin. The nickel plated steel shafts, blue silicone boots, and red anodized aluminum accents