iroky2000

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

Bezalel

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.

Mondoman

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.

iroky2000

Thanks for the information and the offer.
I found a part here local for 20 bucks. Kid is riding again and all is good!