BLACK BEARING - B5 6904-2RS - 20x37x9mm

The BlackBearing B5 is a quality replacement bearing for entry-level to high-end bikes, and BlackBearing's best seller for its balance of performance, cost and lifespan.

Key Features

• High-grade SAE52100 chrome steel races and balls (ABEC 5)
• Reinforced 2RS seals for better water and dust resistance
• Metal cage
• Polished raceways for smoother running
• Premium grease with a higher fill rate
• Suits wheels, hubs, pedals, bottom brackets, pulleys and frame pivots

Specifications

• Reference: 6904-2RS
• Dimensions (ID x OD x W): 20 x 37 x 9mm
• Range: B5