The TAMIYA BBX BB-01 S2 Tool Steel CVD Drive Shaft by GPM BBX063R is produced to improve drivetrain durability while maintaining OEM fitment. Constructed from high grade S2 tool steel with a thickened profile, this component serves as a direct swap for the original dog bone, reducing the risk of deformation during normal running. The part is suitable for hobbyists seeking a reliable, maintenance friendly upgrade that requires no chassis modification.