Transform the Wheely King truck into a rock crawling beast with this Reduction Gear Box Set. This genuine HPI factory approved gear box bolts right into any Wheely King for a perfect fit. It contains a tough metal case, ball bearings and all-metal gears for extra durability. The gear ratio is transformed from 23:1 on the stock truck to a whopping 174:1 after the installation. This Reduction Gear Box Set is perfect for rock crawling because it delivers stump pulling torque and the power to climb any slope.

Recommended for use with #87633 Wheely King Crawler Conversion Set, but it can also be used individually or as the basis for a custom project.