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Chris King SRAM Mountain Bottom Bracket

This Chris King external cup bottom bracket is specifically designed to be used with SRAM and TruVativ GPX style cranksets. GXP crank axles that fit into the external cups are similar to Shimano, except they have a 'stepped' axle, meaning, the axles on the drive side is 24mm and then tapers to a 22mm on the non-drive side. The idea behind the design is to transfer some of the load and force to the drive side of the crank/bottom bracket area.

Instead of offering 2 sizes of bearings, the engineers at Chris King offers 2 -24mm bearings with an axle-shim system comprised of a washer and 2 spacers to make the non-drive side 22mm. We have found that this feature works flawlessly and installs and sets up with ease. No surprise either - Chris King requires a true priori knowledge of a product which comes from exhaustive research and testing before they are available to the general public. It also explains why a Chris King product rarely changes after its initial product launch.

In terms of the raw product, the cups are machined and anodized to surgical precision. Bearings are as high quality as you can get and are also serviceable with Chris King's bearing lubrication tool. Full kit includes both cups, GXP shim kit and center sleeve. Choose your color.


  • BSC threading
  • 5-year warranty
  • 24 ball bearings per side
  • User serviceable bearings
  • Grease injection tool available
  • Chris King strength and durability
  • SRAM/TruVativ GXP compatibility
  • 106 grams

These Chris King Bottom Brackets are compatible with SRAM and Truvativ GXP cranksets only and will not work with Shimano or FSA cranksets.



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