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Chris King Conversion Kit 1 - Pressfit 30 to Shimano

There are many options of bottom bracket conversion kits available to make your preferred crankset compatible with your current Pressfit 30 bottom bracket. Chris King has made finding the correct adapter a bit easier by offering a numeric naming system to classify the many conversion kits they offer. This is Conversion Kit #1 and is designed to make a Chris King Pressfit 30 bottom bracket compatible with a standard Shimano 24mm Hollowtech II crankset.

The inner lip of the adapter is designed to specifically fit the proprietary 33.3mm inner diameter of a Chris King Pressfit 30 bearing. It is not compatible with non-Chris King Pressfit 30 bottom brackets.

Material and construction is machined Delrin. It's selected for being lightweight and durable, but also because Delrin is less likely to creak. Installation is a simple and toolless. Remove the standard Pressfit 30 adapters that came with the Chris King Pressfit 30 bottom bracket, then line up these adapters to the bearings, and snap in the adapters with your fingers.


  • Adapts Chris King Pressfit 30 BB to SRAM GXP crankset
  • Compatible with Chris King Pressfit 30 bottom brackets only
  • High quality and tight tolerances
  • Machined Delrin construction
  • Toolless installation
  • 20 grams
  • Made in USA

Chris King Pressfit 30 bottom brackets have bearings that feature a 33.3mm ID bearing. This allows for fitment of a number of Chris King adapters to make it compatible with non-Pressfit 30 cranksets. The Chris King Pressfit 30 bottom bracket is sold with the standard 30mm adapter.

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