7/8" 22mm Left Handlebar Brake Master Cylinder Lever For 50cc 70cc 90cc ATV Quad

7/8" 22mm Left Handlebar Brake Master Cylinder Lever for 50cc 70cc 90cc ATV Quad

This left-handlebar brake master cylinder with lever assembly is a direct replacement hydraulic control for 50cc, 70cc and 90cc ATV quads, cross-referencing common OEM-style part numbers used across those models.

Overview

This 7/8" 22mm left handlebar brake master cylinder lever assembly gives your ATV quad a complete hydraulic brake control on the left side of the bars. The master cylinder and lever work together to pressurize the brake line and engage the caliper, restoring smooth, predictable stopping power to 50cc, 70cc and 90cc machines. It is built for riders repairing a leaking, seized or broken stock unit on their quad.

Built For Performance

• 7/8" 22mm handlebar clamp diameter matches standard small-displacement ATV bars
• Left-side master cylinder paired with an integrated brake lever for one-piece replacement
• Hydraulic piston and bore sized for 50cc, 70cc and 90cc ATV brake systems
• Cast metal body and lever for steady lever feel under repeated use
• Bolt-on mounting layout that reuses the factory handlebar and brake line position

Fits These Machines

• for 50cc ATV quads with 7/8" left handlebar brake controls
• for 70cc ATV quads with 7/8" left handlebar brake controls
• for 90cc ATV quads with 7/8" left handlebar brake controls
• for most Chinese-built 50cc, 70cc and 90cc ATV models running 22mm bars

On-The-Job Use

• Replacing a leaking or seized master cylinder on a youth ATV quad
• Restoring left-side brake control after a crash or bar swap
• Routine brake system refresh on 50cc, 70cc and 90cc trail quads
• Keeping spare brake controls on hand for a small ATV fleet

Specs At A Glance

Good To Know

Q: Does this fit my 90cc quad? A: It fits quads running 7/8" (22mm) handlebars with a left-side hydraulic brake master cylinder, which covers most 50cc, 70cc and 90cc ATV models. Measure your bar diameter and check the stock mounting points before ordering.

Q: Will I need to bleed the brakes after installing it? A: Yes, any time a master cylinder is replaced the hydraulic system should be bled to remove air. Fill with the correct brake fluid and pump the lever until it feels firm.

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