GY6 50cc Rear Brake Rocker‏

Brand: Mortch Motor
Product Code: MIBRK-0092Z

Product Viewed: 168

Availability: In Stock

Weight: 0.12kg

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GY6 50cc Rear Brake Rocker

🔧 Rear Brake Rocker · Brake Arm · Brake System

For Chinese GY6 50cc 139QMB 4-Stroke Engine

📋 Product Overview

This is the Rear Brake Rocker for Chinese GY6 50cc 139QMB 4-stroke engines, an essential component of the rear drum brake system on scooters. The brake rocker connects the brake cable to the rear brake cam. When the rider presses the rear brake pedal, the rocker rotates, turning the cam to spread the brake shoes against the brake drum, creating friction and braking action.

Manufactured from durable metal materials, this rocker is designed to withstand frequent use without bending or breaking, ensuring reliable braking performance. It is an ideal replacement when the original brake rocker is worn, bent, or damaged.

✨ Key Functions: Transmits braking force · Connects brake cable to cam · Controls rear wheel braking

📐 Specifications

Product Name

Rear Brake Rocker

Engine Compatibility

GY6 50cc · 139QMB

Engine Type

4-Stroke (4T)

Material

Metal (Steel/Iron)

Application

GY6 50cc Scooters

🛵 Compatible Models

This rear brake rocker primarily fits the following vehicles:

GY6 50cc Scooters (Most Chinese 50cc GY6 models)
139QMB Engine Vehicles (4-stroke 50cc)
Various Chinese 50cc 4-stroke scooters
Other scooters using the same rear brake rocker design

Typical models include:

Big Turtle 50cc
Little Turtle 50cc
Haojue 50cc
Various Chinese GY6 50cc scooters

📌 Compatibility Note: This product is designed for GY6 50cc 139QMB 4-stroke engine rear brake systems. Before purchasing, please verify that your vehicle is a GY6 50cc platform or compare with your original brake rocker.

⚙️ Function of Rear Brake Rocker

🔄 Force Transmission

Transmits the force from the rider's rear brake pedal, through the brake cable, to the rocker, and then to the brake cam.

🔧 Motion Conversion

Converts the linear motion of the brake cable into rotational motion to turn the brake cam and expand the brake shoes.

⚡ Force Amplification

The lever design of the rocker amplifies braking force, making braking more effective with less effort.

🔩 Return Function

Works with the brake spring to return the rocker and brake shoes to their resting position when the brake is released.

⚠️ Brake Rocker Failure Symptoms

Excessive Brake Travel: Brake pedal needs to be pressed very deep before braking engages.
Brake Not Returning: Brake light stays on or rear wheel drags after releasing the brake.
Poor Braking Performance: Insufficient braking power, brakes feel soft.
Bent Rocker: Visible bending, twisting, or cracks on the rocker.
Sticking Rocker: Rocker does not rotate smoothly, feels binding.
Worn Connection Hole: The hole where the brake cable connects is worn and enlarged, causing play.

If you experience these issues, inspect the rear brake rocker and replace if necessary.

🔧 Installation Tip

1. Remove the brake cable connecting pin and spring from the old rocker.
2. Remove the rocker mounting bolt and take off the old rocker.
3. Clean the mounting area and apply a small amount of grease to the new rocker's pivot shaft.
4. Install the new rocker, ensuring correct engagement with the brake cam.
5. Reconnect the brake cable and spring, adjust cable tension to the proper position.
6. Test braking performance, ensuring responsive action and proper return.

⚠️ Important Notice: This is a GY6 50cc rear brake rocker, compatible with Chinese GY6 50cc 139QMB 4-stroke engines and other vehicles using the same platform. The brake system is a safety-critical component. Always test braking performance after installation. Images are for reference only. The actual product may vary.

🔧 Compatibility Notice

Please verify that this part fits your specific vehicle model and year. Many vehicles share similar names but use different components depending on year or market region.
We strongly recommend cross-checking with your vehicle's owner's manual or contacting us for confirmation before placing your order.

📄 Product Disclaimer

Product images, measurements, and descriptions are for reference only. Slight variations in color or appearance may occur due to manufacturing batches or photography lighting—functional specifications remain identical to the ordered part.
Professional installation is mandatory. Mortch Motor assumes no liability for damages, injuries, or losses resulting from improper installation, misuse, unauthorized modification, or abnormal operation.

💰 Import Duties & Taxes

All listed prices EXCLUDE shipping costs, import duties, taxes, and customs clearance fees. These charges (if applicable) are determined and collected by your local customs authority and are solely the buyer's responsibility.
In case of return due to unpaid duties/taxes or refusal to clear customs, the buyer shall bear the original shipping cost, return shipping fees, and any associated administrative charges deducted from the refund.

📌 Order Confirmation: By completing your purchase, you acknowledge that you have read, understood, and agreed to all terms above. For any questions, please contact our support team prior to ordering.