Plunging 934 CV Joint - Finned, Chromoly Cage & 300M Race - 33 Spline RCV Plunging 934 CV Joint rebuild kit for race-ready version of the RCV Performance Ultimate 934 CV Joint. Fits a size 21 housing that is finned for increased heat dissipation. The bearYour shipping charge will need to be calculated based on the weight of package and destination.