This is an RPM RC Products RPM82222 package of two Narrow Wheelbase "Revolver" Black 2.2" Rock Crawler Wheels for Radio Controlled Trucks. (Tires not included)
The explosive growth of the rock crawler market as well as strong consumer demand had led RPM to the development of these crawler-specific wheels.
RPM crawler wheels are engineered with a narrower wheel profile, extremely strong 12mm hex drives and we offer them in two different wheelbase (backspacing) options.
RPM's line-up begins with two of our most popular wheels - the Clawz and Revolver wheels. These crawler-specific wheels are 0.4" (10mm) narrower (in width) than a stock 2.2" wheel. This allows the tire to balloon up, rounding out the profile of the tire, providing more side bite with the tire tread. Our two wheelbase options are a wide version which has a 0.28" (7.1mm) backspace option or our narrow wheelbase version which has a 0.69" (17.5mm) backspace option.).
The final crawler-specific detail engineered into these wheels was the ultra beefy hex drive that can handle the power output of many of these brushless beasts.
RPM crawler wheels are sold in pairs and are available in either black or chrome versions. Like all RPM wheels, RPM crawler wheels are backed by RPM's lifetime warranty against breakage.
RPM crawler wheels fit all tires designed for 2.2" wheels. Hex drive is 12mm. Maximum Axle Diameter is 0.196" (5mm). Minimum Axle Length is 0.42" (10.5mm) from the hex face to the end of the axle. Please reference the chart above for more technical details.
GOOD 2.2 WHEEL 
