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I'm going to be replacing the chain and sprockets on my bike this coming week. However, right now I have a 520 conversion kit that's currently installed on the bike. The kit I ordered is a 525 kit, which is back to OEM specs.
My question is, when installing the front sprocket is it okay to use the new chain when torquing the front sprocket nut down to correct spec? I usually would use the old chain, pop the new sprocket in and then tighten it. However in this case, I doubt a 525 front sprocket will fit in a 520 chain. I really hate to use the brand new chain, but it looks like my only option, unless someone has some sort of magic trick that would allow me to get the front sprocket on another way.