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               Originally Posted by 
              fridolin  
              I can't recommend 525. Got one on the Ten and it lasted as long as a proper 520er. I switched back to a 520 chain. 
              As a chain I can recommend EK chains and the 
              special connection link which you just fit with a wrench and pliers. Great stuff and very easy to fit.
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         so can you get spare ones of these then? so if you chain snaps while out you could fit it with a basic tool kit?
         
        
 Al - the EK chain you bought is a 520?
         
        
 Phil - you ordered yours yet? think im going just 1 tooth on the back.