Offering the high speed gear included with Mini 4WD PRO Nitro Thunder and Nitro Force asa separate grade up part to widen setting choices. Mini 4WD PRO racers equipped withsmall wheels and super speed 3.5:1 gear may experience dulling of acceleration on courseswith high number of curves, as the motor becomes stressed when frequent deceleration isrequired. In order to improve acceleration in such cases, utilize this 4:1 High Speed Gear inconjunction with the REV-Tuned or other high revolution motor. Also useful as spare part toreplace old or worn out gears.
Set includes the following: G19 (blue) counter gear x 2, G20 (orange) spur gear x 2. Gear ratio is 4:1 *Compatible Chassis: Mini 4WD PRO (MS Chassis only)
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