English Bottom Bracket BB MT501 For Hollowtech II Spindles Fits 68mm Or 73mm MTB Shell Black With Sealed Bearings For Smooth Rotation And Tight Sealing And High Pedal Efficiency

English BB MT501 Hollowtech II bottom bracket for 68/73mm ✔️ English BSA threaded, 68/73mm shells, MTB use, aluminum cups

The MT501 bottom bracket is designed for Hollowtech II cranksets, delivering sealed bearings and tight sealing for smooth rotation. It fits 68mm or 73mm shell widths on MTB frames and uses aluminum threaded cups for durability.

✅ SHIMANO BB-MT501 bottom bracket with sealed bearings for smooth rotation
✅ Fits English (BSA) threaded shells 68mm and 73mm (shell ID 34.8mm / 1.37")
✅ Aluminum threaded cups for light weight and durability
✅ Spindle Interface: Hollowtech II compatibility
✅ Black color, MTB use, high pedaling efficiency

💡 What is a bottom bracket used for in mountain bike setups?

In short, it provides a stable, smooth-rotating axis for your crank and seals out dirt and moisture. - Sealed bearings reduce friction and wear, boosting pedal efficiency - English-threaded shells (68mm/73mm) fit MTB frames securely - Hollowtech II spindle compatibility covers a wide crank range - Sealed design helps extend bearing life in harsh riding conditions