GALLERY RC UNIVERSAL SHAFT ASSEMBLY DESCRIPTION Compared to a standard axle/dog bone drive shaft, a universal shaft reduces power loss caused by friction during steering.Compatible Chassis Platforms:• TT-02FT• TT-02RR• TT-02D• TT-02• TT-01D Type E• TT-01 Type E• WR-02G• When using the kit standard differential gear with the TT-02 and TT-02D chassis, combine it with item 54477 TT02 Cup Joint for Universal Shaft• When using the OP. 54663 ball diff set with the TT-02, TT-02D chassis Combine with 53806 TT01 Ball Diff. Cup Joint for Universal Shaft• When using the OP. 53671 TT-01 front one-way unit with the TT-02 and TT-02D chassis, combine it with 53590 RC Cup Joint TB-01• When using OP.54875 TT-02 oil-filled gear differential unit with TT-02, TT-02D chassis, use the gearbox joint in the part as it is.• When using the kit standard differential gear with the TT-01 TYPE-ES chassis / TT-01D TYPE-E chassis Combine with 53790 RC Cup Joint for Univ. Shaft TT-01, DF-02• When using the OP. 53663 ball diff set with the TT-01 TYPE-ES chassis and TT-01D TYPE-E chassis Combine with 53806 TT01 Ball Diff. Cup Joint for universal shaft• When using the OP. 53671 TT-01 front one-way unit with the TT-01 TYPE-ES chassis and TT-01D TYPE-E chassis use with 53590 Cup Joint TB-01