The YIKONG YK4107 RC Car Brake Friction Linings (Part No. 21091) are the core friction components of the braking system. Their primary function is to generate friction during braking, helping the vehicle slow down or come to a complete stop. High-quality brake friction linings improve braking response, enhance braking stability, and increase the overall driving safety of your YIKONG YK4107 RC Car.
What Do the Brake Friction Linings Do on the YIKONG YK4107 RC Car?
The primary function of the Brake Friction Linings is to provide consistent friction, converting the vehicle's kinetic energy into heat to achieve smooth and reliable braking.
Installing Brake Friction Linings provides several benefits:
- Deliver consistent braking force
- Improve braking response
- Shorten stopping distance
- Increase braking system stability
- Enhance overall driving control
For drivers who frequently use their YIKONG YK4107 RC Car for off-road driving, rock crawling, or extended driving sessions, high-quality Brake Friction Linings provide greater braking confidence.

Why Should You Replace the Brake Friction Linings Regularly?
Brake Friction Linings are wear items. As they are used over time, the friction material gradually wears down, reducing braking performance.
When the brake linings become excessively worn, you may notice:
- Reduced braking force
- Longer stopping distances
- Slower brake response
- Unusual braking noise
- Increased wear on other brake components
Regularly checking the thickness and condition of the Brake Friction Linings is essential for maintaining reliable braking performance.

What Are the Advantages of Brake Friction Linings?
High-quality Brake Friction Linings provide more consistent and long-lasting braking performance, improving the handling of your YIKONG YK4107 RC Car on challenging terrain.
Key advantages include:
- Stable friction performance
- Quick braking response
- Excellent wear resistance
- Reliable braking performance
- Easy installation and replacement
Whether you're driving casually or tackling difficult off-road trails, they provide dependable stopping power.
What Is the Difference Between Brake Friction Linings (21091) and Brake Clips (21090)?
Although both parts belong to the braking system of the YIKONG YK4107 RC Car, they perform completely different functions. Brake Friction Linings generate the friction needed for braking, while Brake Clips secure the brake components in place. Both are essential for proper brake operation.

| Part | Brake Friction Linings (21091) | Brake Clips (21090) |
|---|---|---|
| Primary Function | Generate friction for braking | Secure the brake assembly |
| Working Principle | Create friction to slow the vehicle | Hold brake components firmly in place |
| Wear Item | Yes | Generally No |
| Effect on Braking | Directly affects braking force and stopping distance | Affects brake assembly stability and reliability |
| When to Replace | When worn or braking performance decreases | When bent, damaged, or unable to secure components properly |
In simple terms, the Brake Friction Linings (21091) help your YIKONG YK4107 RC Car stop, while the Brake Clips (21090) keep the braking system securely assembled. They work together to ensure safe and reliable braking performance.
Daily Maintenance Tips
Keeping the Brake Friction Linings clean and avoiding prolonged heavy braking will help extend their service life.
Recommended maintenance:
- Inspect the brake linings regularly for wear.
- Remove mud, sand, and dust after driving.
- Avoid continuous heavy braking whenever possible.
- Check that the braking system is functioning properly.
- Replace the brake linings promptly if excessive wear is found.
Good maintenance habits help your YIKONG YK4107 RC Car maintain optimum braking performance.
FAQ
Q1: Which models are the Brake Friction Linings compatible with?
These Brake Friction Linings are specifically designed for the YIKONG YK4107 RC Car.
Q2: Are Brake Friction Linings considered wear parts?
Yes. Brake Friction Linings gradually wear down through normal braking and are considered regular replacement parts.
Q3: When should I replace the Brake Friction Linings?
Replace them when the friction material becomes noticeably thinner, braking performance decreases, or uneven wear is observed.
Q4: Do new Brake Friction Linings require a break-in period?
Yes. After installation, perform several low-speed braking cycles to allow the brake linings to properly seat against the braking components for optimal performance.

Product Specifications
| Item | Specification |
|---|---|
| Product Name | Brake Friction Linings |
| Part Number | 21091 |
| Compatible Model | YIKONG YK4107 RC Car |
| Part Type | RC Car Parts |
| Package Quantity | 4pcs / Set |
Conclusion
The YIKONG YK4107 RC Car Brake Friction Linings (Part No. 21091) are essential components that provide the friction necessary for safe and reliable braking. By regularly inspecting and replacing worn Brake Friction Linings, you can improve braking performance, enhance vehicle control, reduce wear on other brake components, and keep your YIKONG YK4107 RC Car performing safely and confidently on every off-road adventure.
