Product Description

Shimano SM-BB71-41B Ultegra Press Fit Bottom Bracket - 86.5mm

The Shimano SM-BB71-41B Ultegra bottom bracket is a high-performance press-fit
assembly designed for HollowTech II road cranksets. Built for durability and
smooth pedalling, it’s maintenance-free and easy to install.

⚙️ Key Features

• Ultegra-level press-fit bottom bracket assembly
• Fibre reinforced polymer cups for strength & reliability
• Sealed cups protect against dirt & water ingress
• Maintenance-free design
• Easy press-fit installation

📏 Specifications

• Shell Width: 86.5mm
• Cup Diameter: 41mm
• Includes: Left & right cups, inner cover, O-rings
• Compatibility: Shimano HollowTech II road cranks

✅ A durable, low-maintenance bottom bracket engineered for smooth and
efficient performance.