High Output Motors
Seasoned HDF Member
Joined: Aug 2013
Posts: 6,088
Likes: 1,962
From: Somewhere on the Bourbon trail
I'm pretty sure the '14 MY touring bikes had the HO 103 motor. One of the main features of the Project Rushmore me thinks. And the Softails and Dyna got them in '16.
Last edited by RKZen; Apr 6, 2020 at 06:33 AM. Reason: typo
Seasoned HDF Member
Joined: Apr 2015
Posts: 10,068
Likes: 5,320
The HO 103 motors started with the Project Rushmore bikes in 2014. The HO motors came with a higher lift cam and a better flowing air box. Supposedly, the twin-cooled (wet-head) has more torque than the air-cooled 103s.
Road Master
Joined: Aug 2009
Posts: 874
Likes: 80
From: new york
103 HO were from 2014-2016, could be twin cooled or not. the cams they used were close to the SE-255 cams and Comp. ratio was upped to 10.0-1. Mostly used in touring bikes.
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Seasoned HDF Member
Joined: Dec 2009
Posts: 9,165
Likes: 1,910
From: Doghouse... mostly
There's not all that much of a difference between the HO engines and the standard variation. Just a few extra hp and a little more torque. More of a marketing gimmick just to hawk more bikes if you ask me.
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All 2014-2016 FL engines (air cooled & twin cooled) got the H.O cam, this is the only difference. Dyna/Softail models got the HO cam in 2015-2017
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Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Road Warrior
Joined: Sep 2016
Posts: 1,887
Likes: 1,059
From: SE Washington
I had both. The cam in the rushmore 103s was somewhere between the SE 254 and 255. In stock and especially in aftermarket stage 1 configurations I found the HO 103 to be much stronger engine. Lots of good dyno information on fm university that shows the difference, but the difference is most noticeable when riding.