Traxxas’ Constant Velocity Driveshafts are engineered for bullet-proof performance, low maintenance, and efficient power delivery in the Slash 4X4, Stampede 4X4 and 1/10 Rally models. The driveshafts are constructed of solid steel and precisely splined to withstand hard-hitting brushless horsepower and extreme 4WD traction. The inner and outer CV-joints are sealed by rubber boots to keep lubrication in and dirt out for performance that lasts, run after run. The boots also capture the cross pins, so there are no set-screws to look after and no chance your car or truck will be sidelined with a missing pin. High-strength performance, high-tech style, and Traxxas Tough durability make these the most advanced CV driveshafts available.