Four Pack Bicycle Rear Hub Cups Three Eighths Inch Ball Bearing Retainer For Mountain Road And Training Bikes Carbon Steel Durable Bike Hub Accessories Rust Resistant And Corrosion Proof Dope Gear

Four Pack Rear Hub Cups with 3/8 in Ball Bearing Retainers
✔️ Four-pack rear hub cups with three-eighths inch ball bearing retainers

These four hub cups and bearing retainers are carbon steel bike components designed to fit many bicycles. They fix and support the rear wheel, reducing friction and helping bearings stay aligned on mountain bikes, road bikes, and training bikes.

✅ Hub cup: outer Ø30.5mm (1.2 in), inner Ø27mm (1.06 in), height 10.8mm (0.42 in)
✅ Bearing retainer: outer Ø25mm (1.0 in), inner Ø12mm (0.47 in), ball Ø6mm (0.24 in)
✅ Material: carbon steel; color black and silver
✅ Packing: 4 hub cups and 4 bearing retainers

💡 What is a rear hub cup and bearing retainer used for in bikes?

This handy part helps secure the bearings and support the wheel for smooth operation. - Secures bearings and aligns the hub for smooth rotation. - Handy for mountain bikes, road bikes, and training bikes; easy to install. - Great for quick repairs and replacements when bearings wear.