The 6803 (17x26x5mm) is a thin-profile bearing used in road hubs, freehub bodies, and bottom bracket designs that require minimal axle length. Grade 3 silicon nitride, DLC-coated races, ABEC-7 tolerances. Direct replacement. Sold individually.
What You Get
- ✓ Grade 3 Si₃N₄ ceramic balls — harder and smoother than steel
- ✓ DLC-coated races reduce surface friction and extend life
- ✓ ABEC-7 precision tolerances for exact bearing bore fit
- ✓ 2RS contact seals: road-appropriate protection
- ✓ Sold individually — order the quantity you need
Technical Specifications
| Sold As |
Individual bearing |
| Seal Type |
2RS contact seals |
| Tolerance |
ABEC-7 |
| Dimensions |
17x26x5mm |
| Expected Life |
10,000–20,000 miles |
| Race Material |
52100 Chromium Steel, DLC Coated |
| Bearing Material |
Grade 3 Silicon Nitride (Si₃N₄) |
Compatibility
Shimano road rear hub non-drive side
Chris King hub designs
Various freehub body bearings
Any application requiring a 17x26x5mm bearing