6803 BKCoating Ceramic Bearing (17x26x5mm) - The Professional's Choice for Speed & Longevity
Engineered for the discerning cyclist, the 6803 BKCoating Ceramic Bearing is the definitive upgrade for those who refuse to compromise on performance. Combining our proprietary BKCoating with G5 ceramic precision, this bearing delivers pro-level smoothness and endurance for your most demanding rides.
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✔Pro-Level Smoothness: Outfitted with Grade 5 (G5) Silicon Nitride (Si3N4) ceramic balls, this bearing minimizes rolling resistance to ensure that every ounce of effort is translated directly into speed.
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✔Hardened Durability: The exclusive BKCoating provides a robust layer of anti-corrosion and wear-resistance on the bearing races, ensuring peak performance and a longer lifespan even when exposed to the elements.
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✔Industry Standard Dimensions: Manufactured to the precise
17x26x5mm 6803 standard, guaranteeing a perfect fit for compatible hubs, bottom brackets, and suspension pivots. -
✔Reduced Maintenance: The superior properties of ceramic balls, including their resistance to corrosion and self-lubricating nature, mean less time on the workbench and more time on the road.
Specifications
| Item | Specification |
| Inner Diameter (ID) | 17mm |
| Outer Diameter (OD) | 26mm |
| Width | 5mm |
| Model | 6803 |
| Ball Material | Grade 5 (G5) Silicon Nitride (Si3N4) |
| Coating Technology | BKCoating Anti-Corrosion Coating |
Application & Compatibility
The 6803 bearing is a common size for high-performance bicycle components, frequently found in wheel hubs, bottom brackets, and full-suspension frame pivots that require a balance of compact size and strength. To ensure a perfect fit, always confirm the specifications of the original bearing in your component before ordering a replacement or upgrade.
Frequently Asked Questions (FAQ)
Q: Are ceramic bearings really better than steel bearings?
A: Yes, for performance-oriented applications, the difference is noticeable. Ceramic bearings offer three key advantages:
- Lower Friction for higher speed,
- Greater Hardness for a longer lifespan
- Lighter Weight for optimized performance.
Q: What is the difference between a 6803 and a 6903 bearing?
A: This is a common point of confusion. The main difference is their dimensions. A 6803 bearing is 17x26x5mm, while a 6903 bearing is 17x30x7mm.
The 6903 is wider and has a larger outer diameter, designed for applications requiring higher load capacity. They are not interchangeable. Always use the exact model number specified by your component manufacturer.
Q: What does '2RS' mean, and how does BKCoating compare?
A: '2RS' denotes a bearing with two rubber seals on either side. It's a popular choice for keeping contaminants out. Our BKCoating offers a different kind of protection: it's a surface treatment on the races themselves that resists corrosion and wear. This provides excellent durability with lower friction than a sealed bearing, making it a pure performance upgrade.
Q: Do I need special tools to install this bearing?
A: Absolutely. To protect your frame, components, and the bearing itself, precise installation is critical. We strongly recommend using a professional-grade bearing press tool and having the work done by a qualified bicycle mechanic.
