The 6902 (15x28x7mm) is widely used in mountain bike hubs, rear road hubs, and freehub body applications. Grade 3 silicon nitride ceramic balls with DLC-coated races and ABEC-7 tolerances provide a significant upgrade over stock steel bearings. 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: trail-capable protection
- ✓ Sold individually — order the quantity you need
Technical Specifications
| Sold As |
Individual bearing |
| Seal Type |
2RS contact seals |
| Tolerance |
ABEC-7 |
| Dimensions |
15x28x7mm |
| Expected Life |
8,000–15,000 miles |
| Race Material |
52100 Chromium Steel, DLC Coated |
| Bearing Material |
Grade 3 Silicon Nitride (Si₃N₄) |
Compatibility
MTB rear hubs (Shimano XT, XTR)
Road rear hubs drive-side bearing
Freehub body bearings
Hope Pro MTB hubs
Any application requiring a 15x28x7mm bearing