Buying the best mountain bike derailleur is indispensable for you and we know.

It certainly is not so much that you would purchase mountain bike derailleur so regularly so you need to pick what works best for you.

Look at our list below for best mountain bike derailleur that you can find on the web.

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1. Shimano Tourney Bike Rear Mech Derailleur RDTX35D Direct Mount (Click Link to Check Price on Amazon)
Editor’s Rating : 9 out of 10
6/7 Speed SIS Rear index shifting rear mechMEGARANGE Gear compatible

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2. Shimano Rear Mech TY300 6/7spd direct (Click Link to Check Price on Amazon)
Editor’s Rating : 9.8 out of 10
Shimano TY300 6 / 7-speed rear derailleur (direct attachment)SIS rear index shifting

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3. MTB Mountain Road Bike Rear Derailleur Hanger 9# (Click Link to Check Price on Amazon)
Editor’s Rating : 9.5 out of 10

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4. Shimano Acera RD-M390 Derailleurs for mountain bikes 9-fold black 2014 MTB Derailleurs (Click Link to Check Price on Amazon)
Editor’s Rating : 9.5 out of 10
Rear derailleur Shimano Acera RD-M390 SGS 9 speedTop-Normal rear derailleur9 speedvery light280 grams

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5. Lixada Bike Thumb Shifters Shift Levers Left and Right MTB Mountain Bike Derailleurs 3×9 Speed Bicycle Transmission (Click Link to Check Price on Amazon)
Editor’s Rating : 9.4 out of 10
1 pair thumb shifters, left shifter for 1-3 speed chainring, right shifter for 1-9 speed freewheel.Optical gear display for convenience.