Hey guys, I just bought a new Airborne Guardian 29er and its great. My old bike is an older schwinn mirada sport 21 speed. I would like to upgrade a bunch of the older worn out components and keep it going. I'm just not sure what will fit.
I would like to upgrade the wheels and probably the rear derailleur. It currently has a worn out shimano GS100 with rapid fire shifters on it.
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