★This is a tuned motor for use with Star-Unit Series releases, and can employ Item 55105 or Tamiya R6/AA/UM3 batteries as a power source. ★See below for compatible pinion gears.
SW-01*1 & T3-01*2 Chassis
*1Compatible pinion gear: Item 54228 (26T only). Use with Items 54834, 54857 and 54876.
*2Compatible pinion gears: Items 50354 (16T only) and 50355 (18T only). Use with Items 54900 and 54928.
*The official Tamiya R/C Parts Matching List has plenty of information regarding chassis compatible with Tamiya Spare and Hop-Up Option parts.