This is nbr 3 GL1800 and nbr 1 was at 167,000 with open exhaust standard airbox. 42 MPG and 35 pulling bunkhouse trailer. Nbr 2 killed by Deer at 20.000 mi. Nbr 3 an F6B at 8,400 and running strong. Mileage appears a bit better, may be 62 lbs lighter and I also trimmed 50 lbs. Been said if you want your motorcycle to handle ( perform ) better, take some weight off. Nice thing it does not cost anything, rather that eating good food in place of fast food. See Ya.