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               Originally Posted by 
              steveD  
              You think you've got problems!. I've just trashed a Metzeler Sahara 3 in 3K miles!
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         LOL.... If I get 3000/35000km out of a rear I'm doing well..
         
        
 back on topic...Chains
        
 I have 40,000km on my XTR & the 2nd chain is near replacement now....
        
 So getting around 20,000k from a chain/sprockets..
        
 1st was what Yamaha put on , 2nd is a RK 520 O-ring..