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himano BB-MT501 Bottom Bracket – BSA 68/73mm Hollowtech II (OEM, No Retail Box)
Description:
The Shimano BB-MT501 is the next-generation Hollowtech II bottom bracket, built for smoother rotation and better sealing than the SM-BB52. It delivers efficient power transfer and improved durability for mountain, trekking, and e-bike applications. Ideal for riders seeking low friction and long service life in all conditions.
These are OEM Shimano Parts — Brand New, Never Installed, Never Used, just NOT in Retail Packaging.
Key Features:
Model: BB-MT501
Type: External Bottom Bracket (Hollowtech II)
Thread: BSA (English 1.37” × 24 TPI)
Shell Width: 68 mm / 73 mm
Spindle Diameter: 24 mm (for Shimano Hollowtech II cranksets – Deore / SLX / XT etc.)
Sealing: Enhanced labyrinth & contact seals for superior dust and water resistance
Material: Lightweight aluminium cups with sealed cartridge bearings
Color: Black
Weight: Approx. 82 g
Package Includes:
Fits Shimano Hollowtech II MTB and Trekking cranksets (e.g. FC-M5100, M6100, M7100, M8100, M8120 series)
For frames with BSA threaded shells only (not Press-Fit types)
Installation Tips:
For 68 mm shells: 2 spacers drive side + 1 non-drive.
For 73 mm shells: 1 spacer drive side only.
Apply grease and tighten to Shimano specified torque.
