Specialized's Roval wheels are engineered for performance, and the Rapide/Alpinist hubs are central to that mission. Our ceramic bearing kit upgrades every bearing in your Roval hubs to Grade 3 silicon nitride with DLC-coated races. You'll notice the difference immediately: smoother spin-up, extended coasting, and significantly longer service life. Works with both Rapide (aero) and Alpinist (climbing) hub platforms.
What You Get
- ✓ Complete front + rear set for Roval hub platform
- ✓ Grade 3 Si₃N₄ ceramic balls, hand-graded for roundness
- ✓ DLC-coated races extend bearing life 3–5x vs uncoated
- ✓ Compatible with Rapide, Alpinist, and Terra models
- ✓ Drop-in replacement — maintains Specialized warranty
- ✓ Swappable seal system (cross seals sold separately)
Technical Specifications
| Seal Type |
Low-Contact Road Seals (included) |
| Tolerance |
ABEC-7 |
| Kit Contents |
2x front hub bearings, 4x rear hub bearings, 2x seal sets, grease syringe |
| Expected Life |
15,000–25,000 miles |
| Race Material |
52100 Chromium Steel, DLC Coated |
| Weight Savings |
~11g vs steel equivalent |
| Bearing Material |
Grade 3 Silicon Nitride (Si₃N₄) |
Compatibility
Roval Rapide CLX / CLX II
Roval Alpinist CLX / CLX II
Roval Rapide CL / CL II
Roval Alpinist CL / CL II
Roval Terra CLX / CL