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My current rear mech has almost worn through the cage and the jockey wheels barley have teeth left so I feel it's time to buy a new one.
Im running 50/39/30 and 11-28 so i've read that id need 37T capacity derailuer.
The bike is a sirrus comp (2008) and has the stock Shimano Tiagra long cage. I can replace like for like for £25. Can anyone suggest a better (lighter/faster shifting) one for around the same price?
Got the same bike, i stuck an xt mech on and it works fine. 9sp.
The 37T range can be done with a medium cage Mountain mech, but you can run a Road Mech for a 28T sprocket.
Bottom line is any medium or long cage 9-speed mech will be fine.
For £25 you will be lucky to get a used XT, but possibly LX or SLX.
Not up to speed with Road Mech prices.
Have a look at the CRC sale?
Merry Christmas, PaulD