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Chris KingThreadFit 30mm Bottom Bracket


Item # CKG001M

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  • Gold, Steel ($178.00)
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Item # CKG001M

Why We Like The ThreadFit 30mm Bottom Bracket

Whether you prefer threaded bottom brackets for their silence, their ease of replacement, or—like us—for the pure romance of these precisely machined beauties, we can all be grateful that craftsmen like Chris King agree. If you're the lucky owner of a dirt-loving frame with a 73mm threaded BB shell, replace your worn-out bottom bracket with the Chris King ThreadFit 30mm Bottom Bracket.

As the latest addition to Chris King's ThreadFit line, this cylindrical powerhouse keeps 30mm spindle cranks turning silently with its made-in-house bearings while you mash the pedals over rocky cruxes and rutted descents. King even makes the system kind to the novice at-home mechanic with an integrated grease injection system allowing you to give a little love to your bearings without a trip to the shop.

  • Ride with silence on this classic threaded bottom bracket
  • Fits 30mm crank arms and 73mm threaded shells
  • Steel bearings made in-house in Portland, OR
  • Easy-to-use grease injection system for at-home maintenance
  • May require a separately sold conversion kit

Tech Specs
Material[cups] alloy, [bearings] steel
Shell Typethreaded external
Shell Width[fit kit 1] 68, 73, 73mm SB+, [fit kit 2] 68mm, [fit kit 3] 68, 73mm
Activitymountain biking
Manufacturer Warranty5 years

Actual Weight

Gold, Steel

Claimed Weight

Claimed weights are provided by the vendor.

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Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

What do you think about this product?


>Rating: 4

Not Perfect... Kind of

I've used it once or twice and have initial impressions

These are Chris King so I have no doubt about the bearing quality but the lack of a dust cap confuses me. Obviously the bearings are sealed otherwise I'm sure it would be blasted all over the internet, but I still can't wrap my head around why they wouldn't have made a dust cover even if it only served to stop grime from building up in the crevice on the outside of the bearing. I don't like that you can actually see a metal washer either so a cap would be a cosmetic improvement as well. I had to watch a video online of someone servicing the bearings before I trusted I had everything together right. I thought I must have been missing a few parts but that's just how it is. I'm thinking of dremeling out the center of my Raceface dust caps to make them work because I don't like the way it looks. Call me picky but I was disappointed when saw the finished product installed. I expected more attention to detail from a company like Chris King. I never had an issue with my Raceface BB but I was getting a CK headset and decided to replace the BB as well. Kinda wish I would have just stuck with the RF. Maybe I'll be blown away at the quality over the next couple months and it won't bother me. I just suspect I'm going to be cleaning the area out with a toothbrush every time I wash the bike and that shouldn't be necessary.

The whole thing with CK is that if it isn't running perfect you can easily service the bearings yourself. The shields that are used have worked for decades and will continue to do so without another plastic dust shield over it. With Chris King, if something is wrong its probably your fault.


I'm looking at either the FSA sl-k modular DM BB392EVO or the Raceface Next R crank. Can you tell me the appropriate CK BB and conversion kit for each of those if they're compatible. The bike will be 2020 Hightower. Thanks!

>Rating: 5


I've put it through the wringer

The 30mm variant of the Threadfit series may not get as much attention as other King bottom brackets, but for those of us who need it (Cinch) there is no better option. After a few rides to "break in" the bearings, you'll wonder why you ever skimped on such a crucial component. Make sure your install goes smoothly with the CK bottom bracket tool (Item #CKG0027) and be sure to check the appropriate bottom bracket conversion kit (No. 21, 23 or 24) for your frame and crankset combo. Don't hesitate to reach out if you have questions!


Can you use any bsa 30 bottom bracket tool or do you have to use the king threadfit 30 botton bracket tool to install and remove the chris king threadfit 30 bottom bracket?


Is this a direct fit on a 2015 Santa Cruz 5010? I have a raceface with 30mm crank arms now. Thanks.

Hi Paul, in order to use this BB with Race Face Cinch crankset you would need conversion kit #21 Cheers

>Rating: 5

One and done

I've used it several times

replaced my worn out raceface bb (non serviceable) with this one. Much better bb that you can re grease and will last for a long long time.

will this bottom bracket fit a yeti sb6 2018?