CNC-machined CVD back drive shaft (77mm) with 2.5mm pin. Constructed from world-renowned HUDY Spring metal the drive shafts feature 2.5mm drive pins for maximum drivetrain efficiency. The drive shafts are linked to thinnest yet most durable drive shafts within electric off road vehicles. Treated with a proprietary solidifying procedure, the drive shafts offer unbeatable lifespan and reliability.