Rear Brake Master Cylinder Pump For 50cc 70cc 90cc 110cc 125cc ATV Dirt Bike

Rear Brake Master Cylinder Pump for 50cc 70cc 90cc 110cc 125cc ATV Dirt Bike

This rear brake master cylinder pump is a replacement hydraulic unit for 50cc, 70cc, 90cc, 110cc, and 125cc ATVs and dirt bikes, restoring rear brake pressure and reliable stopping power.

Overview

This rear brake master cylinder pump is built to replace a failed or leaking unit on small-displacement ATVs and dirt bikes. It pressurizes brake fluid to actuate the rear caliper, giving riders dependable rear brake response. It suits owners of 50cc to 125cc machines who need an affordable, direct-fit hydraulic replacement.

Built For Performance

• Hydraulic master cylinder design generates consistent brake fluid pressure
• Durable body construction handles regular off-road vibration
• Sealed reservoir helps prevent fluid loss and contamination
• Direct-fit mounting pattern for compatible small ATV and dirt bike frames
• Compatible with standard rear brake caliper and hose setups
• Compact size suited to 50cc to 125cc machines

Fits These Machines

• 50cc ATV and dirt bike models
• 70cc ATV and dirt bike models
• 90cc ATV and dirt bike models
• 110cc ATV and dirt bike models
• 125cc ATV and dirt bike models

On-The-Job Use

• Replacing a leaking or seized rear master cylinder
• Restoring rear brake function on a project ATV
• Trail and field riding where rear brake control is essential
• Routine hydraulic brake maintenance and fluid service
• Youth ATV and pit bike repairs

Specs At A Glance

Good To Know

Q: Does this master cylinder come with brake fluid? A: It ships dry, so you will need to fill and bleed the system with the correct brake fluid after installation.

Q: Will it fit my specific 110cc ATV? A: It is listed for 50cc to 125cc ATVs and dirt bikes, but mounting points and hose fittings vary by model, so compare your original unit before ordering.

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