The GPM UTB052FS front CVD set uses medium carbon steel to provide increased fatigue resistance for the AXIAL UTB18 CAPRA Unlimited Trail Buggy front driveline. These parts are intended as direct replacements for the OEM front CVDs and include portal stub axles to preserve factory geometry and fitment. Follow standard disassembly and reassembly procedures during installation and verify fastener torque and driveline alignment after fitting.