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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 09-04-10, 07:07 PM   #1
iroky2000
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Derailer for Columbia bike

Hey folks.
My son broke the derailer on his Columbia mountain bike.
I am a bit confused as to which one to get.
It is a Shimano Tourney derailer.
I have found many options to the derailers, but which one do I get??
Amazon has several for sale and all cheap. Mine does not have any markings to says a part number.
The RD-TX71 looks like it, has the red sprocket.

Any guidance would be appreciated. Thanks!!

Rocky
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Old 09-04-10, 09:02 PM   #2
Bezalel
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Thay are almost all interchangible. The only detail you need to concerned with is whether the derailleur is bolted on throuth the axle or if the frame has a derailleur hanger.
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Old 09-05-10, 12:17 AM   #3
Mondoman
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I picked up a new Columbia Trailhead Sport a few years back and pretty much immediately swapped out the rear derailleur. I have the original one sitting in my parts box in the garage and would be happy to mail it to you for no charge. Send me a private message if you're interested.
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Old 09-06-10, 05:35 PM   #4
iroky2000
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Thanks for the information and the offer.
I found a part here local for 20 bucks. Kid is riding again and all is good!
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