If you have an anglegrinder then you can take off the old chain. Takes like a minute. If you get a chain that has the clip link then you don't need any special tools. If you get a rivet link chain then you need the special tool. One word of warning though, if you do a rivet link, you need to make sure you install it correctly. (same with clip link)

As with the 520 vs 530 chain, the 520 is lighter, but no chain will INCREASE horsepower. The engine makes horsepower, not a chain. A lower rotating mass will help acceleration slightly, but then again, are you racing this bike at the track, or riding t on the street. in addition, 520 conversions will have aluminum sprockets and the 530 kits will have steel. The steel kits will last longer and are normally cheaper. (RK xso chain kits are on eBay right now with steel for $169 plus shipping IIRC, which is a hell of a deal as far as I'm concerned for a chain like that and steel sprockets.

 

530 and steel is good for me....I am not racing or speeding...I just want the bike to be the way it is supposed to be from factory and not this rig job the previous owner did....

Thanks