2015 Road King
Road Master
Joined: Oct 2009
Posts: 797
Likes: 166
From: MA
This is true. I owned a '14 Heritage and now own a '14 RK, and the RK definitely has more power.
Road Warrior
Joined: Mar 2012
Posts: 1,522
Likes: 351
From: Holly Springs, North Carolina
Correct. 14-15 RK is a Rushmore with upgraded cam & HO 103. It does not have the hydraulic clutch though.
Seasoned HDF Member
Joined: Mar 2008
Posts: 9,384
Likes: 1,776
From: Central Texas
not only did Harley bump the stock cams up they also bumped up
the compression from 9.6:1 on the 2014 Fat Boy to 9.7:1 on the
2015 Road King. 2014 fat boy
http://www.harley-davidson.com/conte...oy.html#!specs
2015 Road King
http://www.harley-davidson.com/en_US...ng.html#!specs
the compression from 9.6:1 on the 2014 Fat Boy to 9.7:1 on the
2015 Road King. 2014 fat boy
http://www.harley-davidson.com/conte...oy.html#!specs
2015 Road King
http://www.harley-davidson.com/en_US...ng.html#!specs
Last edited by 6 gun; Apr 2, 2015 at 05:36 PM. Reason: Getting My Facts Stright
Thread Starter
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Intermediate
Joined: Mar 2015
Posts: 40
Likes: 2
From: Dallas
Thanks to all for the responses. I drove the Road Glide tonight with the same engine and it is a world of difference from the Fatboy. I probably will get the Road King.
It would probably take $3500 to bring the Fatboy up to that power curve. Seems smarter to bite it now. I would love to have the Road Glide but that is to big of a jump.
It would probably take $3500 to bring the Fatboy up to that power curve. Seems smarter to bite it now. I would love to have the Road Glide but that is to big of a jump.
Seasoned HDF Member
Joined: Oct 2012
Posts: 13,107
Likes: 13,053
From: Texas, USA
Extreme HDF Member
Joined: Jun 2007
Posts: 12,653
Likes: 18
From: Broken Arrow, Oklahoma
Sorry, these guys \/ are correct.
I also believe there is a tad bit more power in the A motors due to the B engine having counter-balancers that rob some of the power from the engines. There's a price to pay for that smooth idle. So when you take that into account, and the HO 103" in the touring bikes, there is a noticeable difference.
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Joe Kucinski
Club Member
Joined: Feb 2013
Posts: 9,837
Likes: 8,745
From: Edmonton, Alberta
Specs published on the MOCO website say the Fat Boy's 103B motor makes 97.4 torques. The Road King's 103 HO motor makes 104.7 torques. OP can mod his bike to make 7.3 more torques for a lot less than $3500.
Another thing nobody has mentioned so far is that the King weighs 90 lbs. more than the Fatty. So the Fatty actually comes out slightly ahead in a weight vs. torque comparison.
Sounds to me like OP is looking for an excuse to upgrade to a King....and there ain't nothing at all wrong with that!
Another thing nobody has mentioned so far is that the King weighs 90 lbs. more than the Fatty. So the Fatty actually comes out slightly ahead in a weight vs. torque comparison.
Sounds to me like OP is looking for an excuse to upgrade to a King....and there ain't nothing at all wrong with that!
Extreme HDF Member
Joined: Jun 2007
Posts: 12,653
Likes: 18
From: Broken Arrow, Oklahoma
Don't believe everything a manufacturer puts on their spec sheets. They control the conditions of the testing to come up with those numbers and are difficult to duplicate in the real world. When was the last time you got a car that actually got the gas mileage they advertised?