The entry standard for Enduro bearings. Enduros ABEC 3 bearings offer improved quality and performance over ABEC 1 bearings fitted by many OE manufacturers. Only the finest cycling components come standard with Enduros ABEC 3 bearings. With hardened chromium steel races, balls, and tough riveted steel retainers, these bearings are durable and the perfect low cost performance upgrade.

• Bearing Code: MR 21531
• Dimensions: 21.5 x 31 x 7mm
• ABEC: 3
• Grade: 10
• Seals: 2RS
• Grease: Mobile HP 222
• Application: Hubs, Bottom Brackets
• Weight: 24.57g