Rear winch mounting kit WITH a 2" receiver – for WARN, COMEUP or BRONCO ATV winches with a 76x124 mm (3"x4.87") bolt pattern. Once this kit is installed, the factory 1 1/2" trailer hitch receiver can no longer be used – a 2" hitch must be used instead (e.g. Iron Baltic part number 15.1400). This rear winch and receiver kit also allows you to use the Iron Baltic receiver mount system (p/n 84.1000 / 84.1050) on Polaris Sportsman ATVs, which require a 2" receiver for mounting.