Front Brake Master Cylinder for Polaris Sportsman 335 400 450 500 600 700 800

Front Brake Master Cylinder for Polaris Sportsman

This front brake master cylinder is a direct-fit replacement hydraulic pump assembly for Polaris Sportsman ATV models, converting lever input into brake pressure that engages the front calipers.

Overview

This front brake master cylinder for Polaris Sportsman is the hydraulic control unit that pressurizes brake fluid for your front brakes. As a replacement front brake master cylinder, it restores firm lever feel and dependable stopping power on the trail or around the property. It suits riders and DIY mechanics servicing Sportsman 335, 400, 450, 500, 600, 700, and 800 machines.

Built For Performance

• Fits a wide range of Polaris Sportsman displacements from 335 through 800
• Sealed reservoir design keeps brake fluid contained and free of contamination
• Bore and port layout matched to the factory mounting points for a bolt-on fit
• Lever pivot and pushrod interface built for consistent brake engagement
• Housing material resistant to brake fluid and weather exposure

Fits These Machines

• for Polaris Sportsman 335
• for Polaris Sportsman 400
• for Polaris Sportsman 450
• for Polaris Sportsman 500
• for Polaris Sportsman 600
• for Polaris Sportsman 700
• for Polaris Sportsman 800

On-The-Job Use

• Replacing a leaking or seized master cylinder on a trail ATV
• Restoring front brake response after a fluid loss or spongy lever
• Routine brake system service on older Sportsman models
• Workshop repairs and rebuilds on utility ATVs used for hauling and plowing

Specs At A Glance

Good To Know

Q: Does this master cylinder come with the lever and reservoir cap? A: What is included depends on the listing contents, so check the photos and details carefully. Reuse your existing lever and hardware if they are still in good condition.

Q: Will I need to bleed the brakes after installing it? A: Yes, any time a master cylinder is replaced the front brake circuit must be bled to remove air. Fresh DOT brake fluid and a proper bleed will restore a firm lever.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.