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Selecting the proper fork for my mountain bike frame

Old 02-16-09, 02:33 PM
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gman26
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Selecting the proper fork for my mountain bike frame

I have a Mongoose frame that has a threadless fork stay, 34mm ID (looks like 1 5/16" ID); 4" long.

How do I determine what fork to buy (ebay)? I see listings for 1", 1-1/8", etc?
Also, how do I know what bearing set to purchase?
If the fork doesn't come with the lock-rings or nuts, how do I select these?

Is there an easy way to figure this out; besides having someone do it for me?
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Old 02-16-09, 02:46 PM
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You want a 1-1/8" fork.
You'll need a 1-1/8" headset, of the style that matches the fork. Threadless or AheadSet for a fork without threads on the steerer tube.
Threaded headset for a fork with threads.

The headset may come with instructions for installation.
The type of handlebar stem you buy is dependant on the fork you get. Ahead or threadless type stem vs quill type stem for threaded forks.
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Old 02-16-09, 10:36 PM
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Will these work?

https://cgi.ebay.com/New-Cromoly-MTB-...3A1|240%3A1318

https://cgi.ebay.com/Race-Face-Deus-1...3A1|240%3A1318

https://cgi.ebay.com/ws/eBayISAPI.dll...tchlink:top:us
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Old 02-17-09, 10:32 AM
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Yup, and you may want some 1-1/8 spacers to raise and lower the stem to the right height. Headset probably doesn't include any.

The RaceFace is overkill to go with a $20 fork. The FSA is beefy, but a bit heavy.
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Old 02-17-09, 11:08 AM
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Originally Posted by gman26
Will these work?

Will they go on? Yes. Will they change the geometry and the way the bike rides? Possible. You need to match the axle to crown dimension to your current suspension fork. There are a lot of different travel MTB forks and we don't know what yours is.

-R
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Old 02-17-09, 04:15 PM
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Originally Posted by CCrew
Will they go on? Yes. Will they change the geometry and the way the bike rides? Possible. You need to match the axle to crown dimension to your current suspension fork. There are a lot of different travel MTB forks and we don't know what yours is.

-R
The fork has no travel, it's rigid.
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