Phil Wood Outboard Bottom Bracket

Phil Wood Outboard Bottom Bracket
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Phil Wood manufacture Outboard Bottom Bracket (OBB) Cups for integrated spindle and crank systems, available with English (BSA) Threading.

When we decided to work on our next generation Outboard Bottom Bracket (OBB) we wanted to design something that would increase compatibility and adjustability. As a result of this we added 6 mm of thread and 8mm of overall length to our cups. This allows for an increase in thread engagement needed when using different spacer setups in optimizing chain line. There was also an ever present request for us to offer our OBB in aluminum, to not only reduce the unit’s weight but also allow us to offer our full line of anodized colors.

We are happy to announce the release of our new 2nd Generation Outboard Bottom Bracket (OBB) Cups for integrated spindle and crank systems. Each OBB cup and center sleeve is machined in-house from US-produced stainless steel and aluminum. Our aluminum OBB cups are only available in British threading.

The spacing options are reached by using our three new center sleeves which can be purchased separately if you ever need to change the spacing of our 2nd generation OBB. Our 1st generation OBB uses four different center sleeves which can also be purchased separately.

All of our OBB cups come with our Standard 6805 bearings which have a full contact seal and a 100% fill with our Phil Waterproof Grease. 

Compatible with outboard style bottom bracket systems

If you are using a SRAM GXP based system, you will need to use it with the GXP spacer provided with your chainset on this Bottom Bracket.

Cup Threading Type: British (1.370 x 24 tpi, RH/LH thread)
Cup Spacing: BSA 68mm
Axle Compatibility: BB24
Bearing Availability: Standard 6805 - Full Contact Seal - 100% fill, Phil Waterproof grease 
Colour Availability: Silver, Black Anodize


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

• 8mm Allen Key/Hex Tool Large Allen Key

• Anti-Seize Compound - Weldtite TF2 Lithium Grease or Park Tools ASC-1 - Anti-Seize Compound

• Lubricant - Weldtite TF2 Teflon Grease or Park Tools HPG-1 - High Performance Grease

• Outboard Bottom Bracket Tool 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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