4 Pack Bike Ball Bearing Cages With 7 Balls 20.5 Mm Outer Diameter 13.5 Mm Inner Diameter Crank And Wheel Bearing Retainer Set Built Tough For Everyday Bike Maintenance Kit

Four-Pack Bike Ball Bearing Cages with 7 Balls, 20.5mm OD
✔️ Includes 4 steel retainers with 7 balls each, for 13.5mm ID

This four-pack includes steel ball bearing cages (retainers) with seven balls each, sized for a 13.5mm inner diameter head parts and 20.5mm outer diameter (0.53 in / 0.81 in). It’s designed to replace crank bearings on common bikes, including ordinary, mountain, lowrider, and stretch models.

✅ Pack size: 4 retainers
✅ Outer diameter: 20.5 mm (0.81 in)
✅ Inner diameter: 13.5 mm (0.53 in)
✅ Balls per retainer: 7
✅ Material: steel for durability

💡 What is a bicycle crank bearing cage used for in maintenance and replacement? This handy piece helps keep balls aligned and the crank bearings working smoothly.

- Keeps bearing balls in place for consistent rotation - Aids correct spacing and supports longevity of crank bearings - Works with 13.5 mm inner diameter head parts and 20.5 mm outer diameter cages - Essential for basic bike maintenance and replacement tasks