Central Drive Shaft 79mm lengthy is constructed of world-renowned HUDY Spring metal and features 2.5mm drive pins for maximum drivetrain effectiveness. The drive shafts are global s thinnest yet numerous durable drive shafts contained in electric off road automobiles. Hardened with a proprietary hardening procedure, the drive shafts offer unbeatable lifespan and dependability. The security collar right in front part driveshaft secures the pin, even though the ball bearing captures the pin in back axles, both avoiding the pin from coming lose during a run Fits XB4'21