Tamiya Mini 4WD High Speed EX Counter Gear Set (Gear Ratio 3.7:1) - 15434

★This new gear set will give your machine a gear ratio of 3.7:1, which is faster than High-Speed Gear Set (Gear Ratio 4:1) and slower than Super Speed Gear Set (Gear Ratio 3.5:1).
★Compatible with Super TZ, TZ-X, Super X, Super XX, VS, and Super II chassis machines.