Is it possible to put a stock 110 top end from a low rider s on a roadglide with a stock 103

 

No that is not possible without machining out the 103 cases.

 

I would think that would depend on the year of both engines.

When I did the Big Bore 110 kit on my 2012 RGU, it was a requirement to bore the 103 cases. HD now has a 110 Tire Shredder kit that is supposed to be a direct bolt on, no case mods required.

I would think it could be looked into. It might be specific to a certain set of engine years though.

 

The kit cylinders with the small spigot were never used in production

 

Thanks for the clarification. I didn't know that.

 

FYI, Fuel Moto is now selling 110 jugs with the same thin spigot like HD is selling that does not require machining the 96/103 cases. Probably better priced than HD

 

Excellent. Thanks guys

 

As said above NO, but you can get Harley's Bolt On 110 Cylinder & Piston Kit.
Harley sales a few bolt kits that can be had with or without cams. If you just
want to go from 103 to 110, HD SE part# 92500039 will do it for $1195.95.
No case boring is needed with that drop in cylinder & piston kit. I am sure a
few of the 20% off dealers sale that kit at a lower price.

 

And morebthan likely higher quality. Harley does make pretty quality stuff for mass production but the the people that are focused on specific areas will always excell. S&S and Baker are other examples.

 

S&S has a drop in 110 kit that consist of jugs, pistons, 585 easy start cams, S&S lifters, adjustable push rods, cam plate and chain tensioners, 3 stage oil pump and all gaskets.
No machine work required.
Very impressive looking kit, it's called the Winter Power Package
$2500