The GPM TXMS3F/RSA/2 adjustable CVD drive shaft is built for hobbyists who demand upgraded driveline performance. The design replaces stock cross head couplings with a CVD swing joint to improve torsional load distribution and reduce stress points. Materials are selected to balance stiffness and mass, using a hardened steel joint paired to a 6061 T6 alloy body to maintain rigidity under heavy loads while limiting rotating weight.