LAND ROVER DEFENDER CV JOINTS 33 SPLINE HEAVY DUTY XS Heavy-duty CV CV Joints are one of the most critical components in the entire drivetrain. These are constructed from steel alloy with a high percentage of nickel – chromoly – molybdenum specifically SAE4340. After passing through a 3-stage heat treatment process, these components acquire the necessary properties to withstand off-roading adventures whilst minimising stress on other driveline elements including differentials and transfer boxes. They have enhanced toughness and resistance to shock loads and are designed to complement the XS heavy-duty shafts. Suitable for.. - Defender models 1987-1993 to KA930456 Contents / Part numbers.. - 2 x H/DUTY CV JOINT 33 SPLINE - RTC6862HD/DA3856.