Black Bearing bottom bracket ceramic bearing PressFit 46 68 - 73 mm Shimano Hollowtech II 24 mm spindle and GXP adapter included BB-46-68/73-24-C

BLACKBEARING BB-46-68/73-24-C Bottom Bracket – 46 mm (68/73 mm, 24 mm & GXP, ceramic)

The BLACKBEARING BB-46-68/73-24-C is a high-quality sealed press-fit bottom bracket designed for multiple crank standards, including 24 mm Shimano-style and SRAM GXP systems. It uses ceramic (CERA) bearings to deliver extremely low friction, smooth rotation, and long service life.

Key features

• High-quality BLACKBEARING bottom bracket
• 46 mm press-fit system
• Compatible with 68 mm (road) and 73 mm (MTB) shell widths
• Compatible with 24 mm and SRAM GXP crank spindles
• Ceramic (CERA) bearing technology
• Low rolling resistance for improved efficiency
• Smooth and durable operation
• Sealed design for protection against dirt and moisture
• Suitable for road and MTB applications

Technical specifications

Compatibility

• 46 mm press-fit frame standards
• 68 mm road and 73 mm MTB bottom bracket shells
• 24 mm Shimano Hollowtech II-type cranksets
• SRAM GXP cranksets
• Not compatible with 30 mm spindle systems

In practice

The BLACKBEARING BB-46-68/73-24-C bottom bracket uses ceramic bearings to significantly reduce friction and improve pedaling efficiency. It is designed for riders who prioritize performance, smoothness, and long-term reliability in both road and MTB setups.