Installing rear derailleur without breaking chain!?

Question: OK! I finally received my new derailleur, and I do not have a chain rivet tool. How should I put on the derailleur without the rivet? It's a SRAM 3.0 and it doesn't seem to have hex bolts for the idler pulley. I went on the utahmountainbikinbg site, but it doesn't help too much. It's an Xmart bike(I'm planning on a trek from lbs later in the year, so I just wanna ride this one for now.) I'll buy a riviet if I REALLY need it,but is there really no other way? I don't even ride off trail that much. I BORROWED A CHAIN RIVET TOOL FROM A FRIEND'S DAD! I WILL DEFINETELY INVEST IN ONE!

Answer: You definitely will need the break the chain to install a rear derailleur. First check the chain manufacturer and the chain connecting link.. If your chain has a "quick link" which many of SRAM and KMC chains do have them, you don't need a chain tool. Note that, the "quick link" usually has a golden color. A quick connect link could be disconnected by hand. Shimano chains do not have a "quick link" in which you will need a chain tool. Chain tool should cost $6-9. You may consider using 'quick link' if you dont' have on. It should cost $2-4. "Quick Link" makes chain removal easy especially if you want to clean you chain. Some multi-tools ($15-30) has chain tool with it which may be a better buy since it has other tools you may need.

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