We've been making our own stainless-steel sealed bearings here at King for 35 years and never has there been a component that benefited more from their quality than the external bottom bracket. The Chris King bottom bracket is specifically designed for crank systems with outboard bearing cups and is available in the full assortment of colors that only King can do.
It all starts with the bearings. We make our own bearings in-house and our process allows us to place more balls per bearing, 24 to be exact, than our competitors. More rolling elements per bearing translates to a stronger overall bearing system. A bottom-bracket specific upgrade to our legendary sealing system allows the bearings to be purged and re-greased using our precision made injector tool. This combination of strength and serviceability gives us the confidence to offer an industry-leading 5-year warranty on our bottom brackets.
We offer our bottom bracket cups in combination with a plastic center sleeve and three anodized 2.5mm chainline spacers for 24mm crank axle systems such as Shimano Hollowtech II. Only 108 grams.
Also available is the SRAM-compatible 24mm stepped axle configuration. The stepped axle Chris King bottom bracket makes use of a fit kit to match the crank axle to our standard cups and bearings but without use of chainline spacers. 125 grams.
Racers take note! With the Chris King bottom bracket and injection tool, you can train day-to-day with a durable high-viscosity grease and race with a light, fast-rolling low-viscosity grease or oil.
24mm Axle systems include:
Shimano Hollowtech II
Race Face X-Type
24mm Stepped Axle systems include:
We strongly recommend using the Chris King BB External Cup Tool and torque wrench for proper installation.