What size tube do I need in the rear?

I am running a Pirelli MT21 130/90/18. Local shop has a 110/100/18 MSR HD tube, will that work? It is my last resort locally. I pinched the stocker last night while mounting a new tire,,,moron move for sure. :) 2004 "S" is the bike which came with a puny 120 on the rear.

My 2001 "E" had a 110/100/18 rear tire stock which seems the same size as my current 130 MT21 so I assume they are the same size.


yes that will work :)

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