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 200 Phoenix 05-16Polaris 200 Sawtooth 06-07Polaris 250 Trail Blazer 05-06Polaris 330 Trail Blazer 08-09Polaris 330 Trail Boss 05-09Polaris 450 Outlaw 08-10Polaris 500 Outlaw06-07Polaris 500 Predator 2003Polaris 500 Predator 04-07Polaris 500 Scrambler 2x42008Polaris 525 Outlaw IRS07-11Polaris 525 Outlaw SRA08-10