Traxxas 5650R Center Driveshafts E-RevoProduct DescriptionDriveshaft's, center E Revo (steel constant velocity) front (1) rear (1) (assembled with inner and outer dust boots, for E Revo & Summit) Traxxas Steel Constant Velocity Driveshaft's are designed to handle the extreme horsepower and torque that Summit, E Revo, and E Revo Brushless Edition dish out. The inner and outer U joints are lubricated and sealed by a rubber boot for maximum protection against the elements, and the U joint