Shimano RD-TX51 Tourney Mega Range Rear Derailleur 6/7 Speed Hanger Mount Black
Review by asdkfjksdjfsdf "asdkfjksdjfsdf" : works good, easy

I just installed this derailler on my mountain bike and it works great, the cogs are twice the size of normal, it looks kind of funky.

Shimano RD-TX51 Tourney Mega Range Rear Derailleur 6/7 Speed Hanger Mount Black
Review by ledsled : New life for old MTB

I installed this derailleur on an old 80's, friction shifting, Huffy mountain bike, along with a set of SIS Shimano 6-speed shifters and some SIS shifter cable housing. Now the old girl shifts quick and clean with every click just like a new bike. Mine didn't have the red cog like is pictured, but not a real concern.

Shimano RD-TX51 Tourney Mega Range Rear Derailleur 6/7 Speed Hanger Mount Black
Review by T. Le "MAXGUNNER" : GREAT PRICE AND VALUE

FIRST AND FOR MOST THE SHIMANO RD-TX51 WAS VERY EASY TO USE TO REPLACE MY OLD ONE. SHIPPING WAS FAST AND THE PRODUCT WAS NEW LIKE THE SELLER SAID. THE SETTING ON IT WAS ALSO EASY TO USE. IT TOOK ME AMOST AN HOUR TO PUT IT ON AND RUN THE LINE, THIS INCLUDE TAKING CHAIN OFF, I ALSO NEED SOME NEW LINES SO I REPLACED THAT. BUT FOR THE MOST PART IT WAS EASY. I WILL BE BUYING FROM THIS SELLER AGAIN.