6905ZZ Kart Wheel Bearing 25×42×9 mm
The 6905 (25×42×9 mm) is the most widely used 25 mm wheel bearing size in karting. OTT builds it with carbon-nitrided bearing-steel races and balls for a hard, wear-resistant surface over a shock-tolerant core, and fills it with kart-specific grease that holds its film under braking, cornering and kerb impacts. The ZZ version uses non-contact metal shields: practically zero seal drag and protection against larger debris, best suited to clean, dry conditions. For wet or dusty tracks choose the 6905-2RS low-contact sealed version; for OTK / Tony Kart hubs that take the wider bearing, choose the 6905-12.
- Bore (d)
- 25 mm
- Outer dia. (D)
- 42 mm
- Width
- 9 mm
- MOQ
- 10 pcs
- Lead time
- 30-45 days for standard orders
- Shipping
- FOB Ningbo / Shanghai
Technical data
Specifications
| Model | 6905ZZ |
|---|---|
| Inner Diameter | 25 mm |
| Outer Diameter | 42 mm |
| Width | 9 mm |
| Shields | Non-contact ZZ metal shields |
| Heat Treatment | Carbon-nitrided races and balls |
| Lubrication | Kart-specific high-performance grease |
Applications
- Kart wheel hubs (25 mm)
- Front and rear wheels
- Clean, dry track conditions
Fitment note: cross-references and vehicle applications are for identification. Send us the OE number, VIN or a sample and we will confirm the exact fitment before you order.
Key Features
- 01Most common 25 mm kart wheel bearing size
- 02Non-contact ZZ shields — minimal drag
- 03Carbon-nitrided steel for long fatigue life
- 04OEM-quality fit
Packaging
Available in OTT branded packaging or custom OEM packaging. Individual bearings are sealed in PE bags, packed in branded carton boxes, then palletized in wooden crates for export shipping.
Same product line
Related Go-Kart Bearings
Product lines
Explore other bearing types
Wheel BearingsPre-sealed, pre-lubricated wheel bearings — Ball Type and Tapered Roller Type for passenger cars and light trucks.34 models
Wheel Bearing Repair KitsComplete repair kits — bearings, seals, snap rings, and hardware in one package.4 models- Wheel Hub UnitsPre-assembled Gen 2 & Gen 3 hub units — bolt-on installation, sealed for life, ABS-ready.5 models
Alternator BearingsHigh-speed, low-noise bearings for automotive alternators and starter motors.18 models
Application Guides
Request for quotation
Need 6905ZZ in volume, or a variant of it?
Share an OE or competitor number, a drawing or target dimensions and your annual volume. Samples available for qualified projects.
- MOQ
- 10 pcs / model
- Lead time
- 30-45 days for standard orders
- Shipping
- FOB Ningbo / Shanghai