The traxxas 9756 hardened steel axle shafts (front and rear) are heavy-duty replacement components designed to improve drivetrain strength and durability on your rc truck. made from high-quality hardened steel, these shafts resist bending, twisting, and wear while handling high-torque applications, jumps, and rough terrain. engineered for a direct fit using factory mounting points, they install easily and provide long-lasting performance. compatible with traxxas X-Maxx models.