Four Pack 37.2mm Outer Diameter Ball Bearing Cages For Bicycle Crank And Wheel Bearings 16 Ball Set Premium Steel Construction Built Tough Long Lasting Durable Retainer Kit For Road Mountain Bikes

Four-Pack 37.2mm Ball Bearing Cages for Bike Cranks
✔️ 4 cages with 16 steel balls, 31.2mm ID, 37.2mm OD

These four ball bearing cages replace worn crank and wheel bearings on road and mountain bikes. Crafted from steel, they provide a solid, long-lasting retainer for smooth rotation.

✅ Outer diameter 37.2mm (1.46")
✅ Inner diameter 31.2mm (1.23")
✅ Includes 16 steel balls in the retainer
✅ Material: steel for durability and longevity
✅ Pack size: 4 pieces (4 x bearings)

💡 What is a ball bearing cage used for in bicycle crank and wheel bearings?

It's a handy replacement part that helps maintain bearing spacing and performance.

- Ball spacing and rotation support
- Durable steel construction for long life
- Fits common 31.2mm ID bike head parts