Just got back from riding the mountains. Filled before I left with 93 non ethanol,filled back up and got 49.7 mpg for today's ride.

 

I got 34 mpg on my last fillup... 34 - 38 mpg is all I ever see.

103ci, stock tune and A/C, fullsac true dual kit, Rush 2.0in slipons, 190 lb rider, 10% ethanol, 93 octane, heavy on the throttle, cruise @ 3000 rpm.

 

34 to 37 mpg... Thats it no more. Maybe I will get more as the motor breaks in. I am not holding my breathe for it. I could back the tune down a little and I could get off of the throttle but it wont happen. I just gave up on it. I really think gas around hear is crap, and full of ethanol but I can not fix that problem.

 

39 to 41 on mine. 1200 miles im throttle happy

 

it seemed to me that when i hit 4k to 5k miles on my 08 streetglide, the mileage improved, the motor seemed to run smoother, and noticeably cooler. i believe it's that all the mating surfaces, bearings, etc, are getting smoothed out from being fully broken in. sorta like all the parts decide to work with each other. sorta like rodney dangerfiels's quote when he said, "can't we all just get along"? i know it was rodney king, but it's a lot funnier with dangerfield's twist on it.

 

At 55-60 on level road I am in 6th gear usually. Last tank was 47.1 and my average so far is 43.3. 2012 RK with no mods other than slip-ons.

 

I average around 40-42 riding in MN or WI under similar conditions on my 11 Limited with Fuel Moto exhaust and intake.
While recently out in Colorado I saw 53 mpg while riding in the mountains but also had a headwind day in South Dakota where we got 36 mpg. I don't think yours is all that far off as I got similar mileage stock for the first couple thousand miles.

 

My avg used to be about 35mpg. Recently like magic it went up to a little south of 40mpg. Guess motor is finally breaking in.
Considering my F150 gets about 14mpg, I'm happy as a pig in **** with the mileage on my RKC.

 

Chief, not quite enough information here. Do you ever go into 6th gear? Is it two lane roads with some downshifting into 4th? Your driving style and habits has a lot to do with the mpg.

My '12 RGU got 42 mpg on the highway cruising 65-70 with 2/300 miles on it. At 2000 miles I consistently get 44 mpg highway, 41-42 on two lane roads with down shifting, and 32-33 urban driving. I will add that it is unmodified aside from a set of Von Braun slip-on mufflers.

There probably isn't anything wrong with the bike, especially since you didn't mention and driveability issues or a check engine light.

 

I ride regularly with a guy who has an '09 EG 96ci, Stage 1. We routinely get within a few tenths of each other on the mpg when we check it on fuel stops. The sharknose bikes may do slightly better when it's pure highway driving at higher speeds, but I haven't seen it yet.