Rear Brake Master Cylinder for Yamaha Kodiak 400 450 Grizzly 300 400 450 660

Rear Brake Master Cylinder for Yamaha

This rear brake master cylinder delivers hydraulic pressure to the rear brake caliper on Yamaha ATV models, and it installs as a direct replacement for the factory unit.

Overview

This rear brake master cylinder is a hydraulic pump that converts pedal force into brake pressure for the rear caliper on Yamaha ATVs. It is built for riders who need a reliable replacement for a worn, leaking, or seized master cylinder. The rear brake master cylinder restores consistent rear braking on the trail or around the yard.

Built For Performance

• Hydraulic bore sized to move the volume needed for a firm, responsive rear brake feel
• Sealed reservoir design keeps fluid contained and free of trail dust and debris
• Durable housing construction resists corrosion from mud, water, and seasonal temperature swings
• Direct bolt-on mounting that matches the factory attachment points
• Compatible with standard DOT brake fluid

Fits These Machines

• for Yamaha Kodiak 400
• for Yamaha Kodiak 450
• for Yamaha Grizzly 300
• for Yamaha Grizzly 400
• for Yamaha Grizzly 450
• for Yamaha Grizzly 660

On-The-Job Use

• Trail riding where reliable rear braking is needed on descents and loose surfaces
• Utility work on farms and acreage with repeated stop-and-go operation
• Hunting and hauling duty where the rear brake carries most of the control
• General ATV maintenance when a factory master cylinder fails

Specs At A Glance

Good To Know

Q: Does this replace the stock rear master cylinder? A: Yes, it is designed as a direct-fit replacement for the listed Yamaha ATV models. Fit can depend on model year and serial number.

Q: Will I need to bleed the brakes after installing it? A: Yes, the system must be bled to remove air before the brake will feel firm. Use fresh DOT brake fluid and check for leaks at the fittings.

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