ENDURO 6803 ABEC 3 SEALED BEARING 17 X 26 X 5

The Versatile Core of Modern Hubs and Pivots.

The Enduro 6803 ABEC 3 is a high-performance radial bearing that serves as a fundamental building block for many modern high-end bicycle components. Measuring 17mm x 26mm x 5mm, this specific size is a mainstay in the cycling industry, commonly found in rear hub shells, freehub bodies, and certain suspension pivot designs. Unlike generic industrial bearings, the Enduro ABEC 3 series is engineered specifically for the oscillating and high-torque environment of a bicycle, prioritizing a balance between smooth rotation and long-term durability.

This bearing features LLB (Light Contact, Linear Lip) seals, which are the benchmark for performance cycling. The dual-lip design utilizes a specialized groove in the inner race to create a labyrinthian seal. This configuration provides a robust barrier against the elements while maintaining a "fast" feel with significantly less drag than heavy-duty industrial seals. Whether you are rebuilding a premium hub or refreshing your frame's suspension linkage, the 6803 ABEC 3 is the industry "workhorse" for reliable, friction-free performance.

Key Performance Features

• 52100 High-Carbon Chromium Steel: The races are vacuum-degassed to achieve maximum purity, resulting in a harder surface that resists pitting and "brinelling" under heavy radial loads.

• Grade 10 Precision Balls: Features high-precision balls that are spherical within 10/1,000,000", ensuring even load distribution and reducing internal vibration.

• LLB Dual-Lip Seals: Provides an effective seal against road spray and dust without the high rotational friction of "full contact" seals, keeping your wheels spinning longer.

• High-Pressure Waterproof Grease: Factory-packed with a specialized marine-grade lubricant designed to withstand the high-vibration environment of a bicycle hub without washing out.

• ABEC 3 Precision Rating: Manufactured to strict tolerances for roundness and smoothness, exceeding the quality of standard OEM bearings found in many mid-range components.

• Radial Design: Optimized for loads perpendicular to the axle, making it the perfect choice for the high-RPM environment of wheel hubs.

Technical Specifications

✅ Why This IS For You

• Hub & Freehub Rebuilds: This is one of the most common bearings for modern rear hubs. If your wheels have developed "play" or feel gritty, this is the precision replacement you need.

• Suspension Linkage Refresh: Many full-suspension frames use the 6803 size for main pivots or rocker links, providing a smooth, stiction-free suspension movement.

• Performance Enthusiasts: A cost-effective way to upgrade the rolling efficiency of your bike by replacing standard factory bearings with high-tolerance ABEC 3 units.

❌ Why This May NOT be for you

• Extreme Corrosive Conditions: If you frequently ride in salt-heavy environments or power-wash your bike, you may prefer the Enduro 6803 Stainless Steel version for ultimate rust protection.

• High-Stress Bottom Brackets: While some bottom brackets use this size, high-torque applications sometimes benefit from the MAX (Full Complement) version, which uses more balls for increased load capacity.

BFC Pro Tip

The 17mm internal diameter of the 6803 makes it a precision fit on many axle types. During installation, always use a bearing press with the correct drift that pushes only on the outer race when installing into a hub shell, or the inner race when sliding onto an axle. Never apply pressure across the balls! A tiny amount of retaining compound (like Loctite 641) on the outer race can help prevent the bearing from "walking" or creaking in hubs with slightly oversized bores. If you're using these in a freehub, ensure you don't over-grease the external seals, as this can attract grit and lead to premature wear.