Designed for the difficult operating environment of the ATV/UTV industry, this bearing is a premium EMQ quality, hi-speed bearing.One kit per side required, two total required to change out front; two total required to change our rear.Features precision high speed bearings manufactured to ABEC3 standards.Each front kit repairs one wheel, purchase 2 kits to complete both wheels.This kit comes with wheel bearing only.This item fits the following applications:Polaris 250 Big Boss 4x689-92Polaris 250 Trail Blazer 90-98Polaris 250 Trail Blazer 99-04Polaris 250Trail Boss 88-89Polaris 300 2x494-95Polaris 300 Xpress 96-99Polaris 325 Magnum 2x400-01Polaris 325 Magnum 2x42002Polaris 325 Trail Boss 00-02Polaris 330 Magnum 2x403-05Polaris 330 Trail Boss 03-04Polaris 350L Trail Boss 2x490-92Polaris 350L 2x41993Polaris 400L 2x494-95Polaris 400 Scrambler 2x400-02Polaris 400 Sport 94-98Polaris 400 Sport 1999Polaris 400 Trail Blazer 2003Polaris 400L Xpress 2x496-97Polaris 425 Magnum 2x495-98Polaris 500 Magnum 2x4 HDS2002Polaris 500 Scrambler 2x400-02