These Phil Wood cartridge cups are needed to complete the bottom bracket assembly. Cups are sold in sets of 2, so only one set is needed for each bottom bracket.
You'll need a Phil Wood installation tool to install these cups, and there are 2 available...

Phil Wood Portable Cartridge Cup Installation Tool
Price: $15.99

Phil Wood Pro Shop Bottom Bracket Cup Installation Wrench Tool
Price: $64.99
Phil Wood Bottom Bracket Cup Mud Guards are designed to protect your Phil Wood bottom bracket cups from dust, dirt and mud that can accumulate in and around the bottom bracket cup splines.

Phil Wood Bottom Bracket Cup Mud Guards
Price: $20.99

American made in USA (U.S.A.)

Phil Wood Bottom Bracket Cartridge Cups - British - Stainless

Ready To Ship In: 3-5 Days
Ships To: Worldwide
Returns: 60 Day Free Returns
Guarantee: Lifetime Limited Phil Wood Warranty
Made In: San Jose, CA, USA

$39.99

AVT.Bike is an authorized Phil Wood dealer and proud to carry one of the largest selections of Phil Wood products available online and shipped anywhere in the world.
Phil Wood hubs & headsets are available in a range of colors which may vary by product so please consult the specific product page for details on available options.
Other colors and product options are available depending on stock levels, so if you don't see the color or exact product you are looking for please contact us.
We typically ship out Phil Wood product in around 3 days from placing your order, but in some cases this can take a few days longer as many hubs, headsets and BB's are built to order.
If you have any technical questions at all on Phil Wood products please contact us and we'll be pleased to help you out!
All Phil Wood products are responsibly manufactured in San Jose, California, USA.
All Phil Wood products carry a lifetime, limited warranty.