TKR6669B – Spindle Arms (L/R, EB/ET410, requires TKR6553X, Type B) Vehicle Compatibility • TKR6669B - Spindle Arms (L/R, EB/ET410, requires TKR6553X, Type B) is included with the SCT410SL kit and can be used as a replacement part for that vehicle. • This can be used with the EB410, EB410.2, ET410 and ET410.2 vehicles but you will need TKR6553X for the EB410, EB410.2 and ET410.Click the links above to view other parts.