This is an optional Exotek XB4 12mm Aluminum Front Wheel Hex Set. These precision machined aluminum hexes feature a 12mm diameter, and a 5.5mm width, combined with a secure clamping design that allows the use of Kyosho 4wd (or similar off set) front wheels on your XB4.
- EXO1409 makes the wheel width about 247mm wide with Kysosho 4wd front wheels.
- 22-4 or D413 front wheels not recommended. The off set is too wide.