BBB Bottomthread Outboard Bottom Bracket

Velodrome Shop


BBB Bottomthread Outboard Bottom Bracket an excellent value press fit Bottom Bracket from BBB available with oversized cartridge bearings for Road BSA 1.37”x24T or MTB BSA 1.37”x24T.

  • Oversized cartridge bearings
  • Die cast alloy and CNC machined external cups.
  • Composite center sleeve with double o-ring seals.
  • BSA threading
  • Fits 24 mm spindle cranksets.
  • Fits 68 and 73mm wide brackets.


You will require the following tools to install this product on your frame

• 8mm Allen Key/Hex Tool Velodrome Shop Large Allen Key

• Anti-Seize Compound - Weldtite TF2 Lithium Grease

• Lubricant - Weldtite TF2 Teflon Grease

• Outboard Bottom Bracket Tool Velodrome Shop Hollowtech-GXP Bottom Bracket Tool

The following video is an excellent video from Park Tools showing the process of installing a Outboard Bottom Brackets and Chainsets on a Road Frame. The processes shown are identical to those used on a Track Frame, with the exception that you will not need a mallet to hammer the chainset into place, so the video is a very useful guide. 

Park Tools are listed here on our website

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