Traxxas 6493X Gear 21-T Pinion

Set screw included.

Pinion size is the single easiest gearing change you can make. A larger pinion like this one raises top speed and makes the truck pull taller gearing, at the cost of some low-end punch and with more heat going into the motor and ESC. Stepping up two teeth from the 19-T is a common move for open, high-speed running.

Important: Traxxas specifies this pinion for use only with steel spur gears.

Fits: Traxxas XRT (78086-4) and XRT Ultimate (78097-4), and other Traxxas models using a 5mm motor shaft with 1.0 metric pitch gearing.

Monitor motor and ESC temperatures after any gearing change.