I'm not able to find this info. I think its 110 which would be perfect for a 49 rear sprocket . Only reason for stock klx300 chain is good deal on new one. The info is 520 -110 o ring drive chain. Does the 110 mean its a 110 in length?
thanks

 

I would delete post if I could I just found it that it is a 110. Now I just need to order a 49 and life will be good.

 

I have a 14/49 (3.5 gear ratio) combo andbought a 520 O-ring 115 chain (115 links). It's set on 'slot3' and fits my tire and lower chain guard at proper tension. (upper chain guard or mud collector as we call them was discarded....)