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Shimano Tourney TX55 Rear Derailleur

Item #: RD257A00
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Shimano Tourney TX55 Rear Derailleur

This economical replacement rear derailleur will provide index ("click") shifting compatibility with Shimano or SRAM 6 or 7 speed shifters, and will also work with older 5 speed shifters in friction mode.
  • Light action design
  • Handles up to a 34 tooth largest cog
Two mounting versions are available:
  • "BOLT-ON, FOR FRAMES W/ DERAILLEUR HANGER" is for frames that have a threaded derailleur hanger to accept the rear derailleur. Such frames usually have a quick-release rear wheel
  • "W/HANGER, FOR FRAMES WITH NO HANGER" is for frames that do not have a threaded derailleur hanger; the hanger is part of the rear derailleur and is held in place by the rear wheel - typically a nutted axle type found on less expensive "Mart" bicycles
4.3 / 5.0
20 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
10
7
2
0
1
Delivered quickly, installed easily!
My order was delivered quickly, installed easily and all at a great price. Thanks! I will order again and recommend you.

PROS: Lightweight, Attractive Design, Easy To Install

BEST USES: Mountain Biking, Upgrade
February 18, 2014
Location:
Homestead, FL
Big improvement over stock unit.
I use these to replace the stock der on "Mart" type bikes, which is usually a very poor performing unit. In the right version, this will bolt right in place of the stocker and be a easy upgrade.. they definitely will improve shifting. I suggest pairing this with a better index shifter and maybe a fresh freewheel.

PROS: Easy To Install, Attractive Design, Durable

BEST USES: Mountain Biking, Casual Riding, Upgrade
May 4, 2014
Location:
Sacto, Ca
Long last replacement
Works really well as a replacement. I have a 2000 schwinn sidewinder with more than 20,000 miles and have gone through many derailleurs but this seems to be the best. It is simple to adjust and accurate.

PROS: Easy To Install, Commuting, Replacement, Durable

CONS: Na

BEST USES: Casual Riding, Replacement, Mountain Biking, Daily Commuter, Upgrade
February 22, 2014
Location:
hopkinsville ky
Great Product
Came a day ahead of when it was supposed to come, was very pleased.

PROS: Easy To Install, Attractive Design, Durable

BEST USES: Upgrade, Mountain Biking
August 7, 2014
Location:
Clinton, IA
good derailer
I like this derailer the pully on the cable seems to make it shift smoother. It a good derailer for a low price.
February 29, 2012
Location:
herrin, il
Easy install
Great product for the price, easy adjustment/ tune up.

PROS: Easy To Install
September 29, 2014
Location:
Apple Valley, CA
shimano tourney sis rear derailleur
I bought this for a sad, beat up, and abused Schwinn S60 to refurbish for a loaner bike. I am surprised how crisp the action is and how little fine tuning was required. At this price point it wouldn't hurt to keep a couple in the garage for emergency spares.

PROS: Durable, Easy to set up, Very inexpensive

CONS: Huge, Heavy

BEST USES: Commuter, Recreational riding
March 13, 2012
Location:
Northern Minnesota eh.
Good alternative for a kids MTB RD
I used this to replace the OEM rear derailleur on my son's Specialized Hotrock 6-speed that had one too many tumbles onto the sidewalk. Fitment was fine but the cage hangs kind of low for a 20" wheeled bike.

PS, if your kid is riding a geared bike - make sure you install one of those derailleur guards.

PROS: Durable, Easy To Install

CONS: Heavy

BEST USES: Upgrade, Mountain Biking
October 21, 2014
Location:
Tinley Park, IL
Works great.
Fast shipping.

PROS: Versatile, Durable

CONS: None.
September 27, 2016
Location:
Indiana
Shimano Rear Derailer
This item was exactly as advertised.
Everything You could want from a retailer online.
Cheap and easy to use!

PROS: Perfect Fit, Perfect price, Perfect transaction
May 29, 2012
Location:
Virginia USA

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Get free shipping with your $50 purchase today when you choose Standard Shipping at checkout. Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.