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               Originally Posted by 
               pino509 
                
               
             
               In service manual, I read that XT660X doesnt have inner tubes. Is that correct? 
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         No it isn't. The XTX has inner tubes. 
         
        
 Either use your old tubes if they're in good condition, or buy a pair of new ones if they look a bit shabby, lose air or have been patched.