Description
Upgrade your bicycle maintenance with the Sunlite #66 12-Ball 5/16-inch Retainer Bearings, specially designed for American Bottom Brackets. Crafted with precision engineering, these high-performance bearings ensure smooth, efficient operation for your crankset, extending the life of your bike’s drivetrain.
Premium Materials & Durability
Constructed with robust steel balls and sealed to prevent dirt and moisture ingress, these bearings are built for reliability in various riding conditions. The 5/16-inch ball size, combined with high-quality retainer design, guarantees durability and reduced friction, resulting in improved power transfer and pedal efficiency.
Advanced Performance & Engineering
These Sunlite #66 bearings feature a 12-ball configuration, providing optimal load distribution and minimizing uneven wear. Precision-engineered to fit American Bottom Brackets, they deliver consistent performance for both recreational riding and demanding cycling pursuits. Their straightforward replacement process makes servicing your bike quick and hassle-free.
Components & Technology
Designed with a retainer cage to maintain proper ball spacing, these bearings facilitate smooth rotation and reduce maintenance needs. The sealed construction helps keep contaminants out, preserving performance and extending service intervals.
Versatile Style & Use Case
Ideal for bike enthusiasts, cycling shops, and mechanics, these retainer bearings are perfect for replacing worn or damaged components in American-style cranksets. Whether you’re restoring an older bike or upgrading your current setup, these bearings ensure reliable operation and improved ride quality.
Innovative & Differentiating Features
Sold in boxes of 10 for convenient purchasing, these retainer bearings are a cost-effective solution for bike maintenance. Please note, retainer-type bearings are sold as a set of ten and are incompatible with other sizes for bundle pricing. For sealed bearing replacements, individual units are available.
Key Specifications:
– Ball Size: 5/16 inch
– Ball Quantity: 12 balls per bearing
– Fitment: American Bottom Bracket Cranks
– Model: 66
– Package: Box of 10 bearings
Ensure your bicycle maintains optimal performance with the Sunlite #66 12-Ball 5/16-inch Retainer Bearings – the perfect upgrade for efficient, smooth cycling. Order now to experience reliable, high-quality bike maintenance that keeps you rolling with confidence.
- High-quality, durable construction with 12 precision-crafted balls for smooth, reliable pedal performance.
- Designed specifically for American bottom brackets, these 5/16-inch retainer bearings ensure an optimal fit and easy replacement for compatible crank systems.
- Manufactured with sealed, corrosion-resistant materials to prevent dirt, water, and debris ingress, extending bearing lifespan and reducing maintenance.
- Engineered with advanced ball-retainer technology, these bearings deliver enhanced performance, reduced friction, and increased efficiency during cycling.
- Sold in convenient boxes of 10, these Sunlite #66 bearings are ideal for bike shops and DIY enthusiasts seeking trusted quality parts for professional service and ongoing maintenance.
| Ball Size | 5/16` |
| Description | Crank-American 12-Ball |
| Ball Qty | 12 |
| Fit | 1pc |
| Model | 66 |






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