Introductions: Brake calipers are essential to your car's ability to stop and are arguably one of the most important automobile brake parts. Most cars today have disc brakes, and a lot of cars and trucks are now using disc brakes in the rear, too. In a disc-braking system the car's wheels are attached to metal discs, or rotors, that spin along with the wheels. The job of the caliper is to slow the car's wheels by creating friction with the rotors. In general, our calipers to last at least 100,000 miles or 10 years. But Caliper replacement is required if a caliper is leaking brake fluid, if a piston is sticking, or the caliper is worn or damaged. Leaks are very dangerous and should neverbe ignored because loss of fluid can cause brake failure.Feature: Place on Vehicle: Front Left and Right Reminder: Always inspect rotors for cracks and replace as necessary for longer brake pad life. *Hardware included for a complete removal and replacement. Just bolt on, bleed and top off fluid and ride. * Professional installation is highly recommended (No Instruction Included)Specification Application: For Polaris ATV Magnum 500 1999-2000 For Polaris ATV Ranger 500 1999 For Polaris ATV Sportsman 500 1999 For Polaris ATV Xplorer 400 1999-2000 Place on Vehicle: Front Left or Right Packing includes: 1x pair Front Brake Calipers(Left and Right)Packing includes: 2x Front Brake Calipers(Left and Right)Code:MGGRP Authority IDMXR02FXSY NoticeCalifornia Prop 65 Warning NoticeCalifornia Prop 65 Warning Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.