Quote:
Originally Posted by TedV
Are you sure the grip muffs are to blame and not the colder temps with the winter blend of fuel, thicker grease and oil, etc.?
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A little of both. I have been getting 81mpg with the grip muffs on and winter fuel. I took them off for one round trip with the new +1 front sprocket and broke 90. It was pouring rain though so my average speed was much slower at 58mph. They are adding some frontal area and a lot of turbulence.