Mountain Biking - I need a new rear derailleur for a 21 spd
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12-11-10, 07:15 PM
Somehow a stick jumped up this morning on the woods trail I was on and I broke the Shimano Altus rear derailleur on my 2010 Giant Boulder.
It has Shimano EF-50 7 speed shifters, Crank: 28/38/48, Cassette: 14/16/18/20/22/24/34.
I found a good price on a Shimano LX M581 and was considering it. Any reason why it wouldn't work for me?
That'll work just fine. Get it. Go ride. Break more stuff. Repeat.
12-18-10, 01:47 AM
The number of gears(speeds) don't matter on the derailleur, the shifters control that.
Here's a guaranteed match ? If you were satisfied with OEM ?
Almost any modern derailleur will work for you. The LX is a good robust derailleur and will serve you well. That was my derailleur of choice whenI was racing downhill.
Id say go with the LX, ride the crap out of it and enjoy.
12-20-10, 08:11 PM
I ended up getting the same Altus shifter, a new chain and retruing of the rear wheel. Should last me a while longer.
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