Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Ball Material | Silicon Nitride Ceramic |
| Race Material | 440C Stainless Steel |
| Small Bearing ID | 32 mm |
| Small Bearing OD | 35 mm |
| Small Bearing Width | 4 mm |
| Large Bearing ID | 51 mm |
| Large Bearing OD | 58 mm |
| Large Bearing Width | 4 mm |
| Seal Type | Non-Contact Rubber |
| Maintenance | Maintenance-Free |
Anonymous
Mar 14, 2026
Rating: 5/5
Quiet Operation
No more grinding noise from the rear derailleur. Very happy with the silence and smoothness during shifts.
Anonymous
Feb 25, 2026
Rating: 5/5
Incredible Smoothness
Upgraded my derailleur pulleys and the shift quality is noticeably crisper. The ceramic bearings spin freely with almost no resistance.
Anonymous
Feb 21, 2026
Rating: 5/5
Durable Build
Survived a muddy cyclocross season without any issues. The seals are holding up well against debris.
Anonymous
Feb 04, 2026
Rating: 5/5
Worth the Cost
Expensive but the performance gain in wet conditions is real. No grit noise after riding through puddles.
Anonymous
Jan 30, 2026
Rating: 4/5
Great Product
Works as advertised. Installation required a press tool though, so factor that into your budget if you do it yourself.
Q: Is there a warranty?
A: Yes, all bearings come with a 1-year defect warranty against manufacturing issues.
Q: What is the weight difference?
A: You save approximately 12 grams over standard steel bearings due to the ceramic balls.
Q: Are these compatible with SRAM AXS?
A: These are designed for the Absolute LBACK system. Please verify pulley cage compatibility before purchasing.
Q: Can I use a hammer to install?
A: No, please use a bearing press to avoid damaging the ceramic balls or the races.
Q: Do I need to lubricate them again?
A: No, they come pre-lubricated and are sealed for life. Additional lubrication is not recommended.
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