SE 253 were in 07 and 08 SE 110
this is a 103+ cam not used in any 110
I'm confused!
The 255 was the cam that was removed from my 2008 Screamin Eagle Road King. It was also the cam installed with the Harley 110 kit in my 07 Street Glide.
Screamin' Eagle® Street Legal Stage I Kit - 110 Cubic Inches
Bring your Twin Cam motorcycle up to the same displacement and power output as the CVO™ Screamin' Eagle® models - a gigantic 1800cc's. This street legal kit combines all the proven components of the CVO™ Screamin' Eagle® models - the 4" big-bore forged pistons and cylinders,
SE-255 camshafts, and cylinder heads with automatic compression release. The Screamin' Eagle® cylinder heads and forged piston combination offers a 9.3:1 compression ratio forhe "Screamin' Eagle®" script. Kits includes all required gaskets (except primary cover and transmission interface gasket) and hardware to complete the installation. Installation requires case boring. Professional installation recommended. Separate purchase of cam spacers is required. See service manual for proper procedure and cam spacer part numbers. Requires separate purchase of appropriate Automatic Compression Release Wiring Harness.
SE-255 CAM KIT
The ultimate in torque cams, this cam offers substantial
increased in low end torque for engines up to 110 cubic
inches with compression ratios up to 10 to 1. The low end
torque increases are great for heavy bikes or for the person
who routinely shifts below 4500 rpm and wants the power
available to pass without downshifting. The cam still makes
peak power above 5000 rpm so people with lighter bikes
will enjoy the torque increases without feeling like the bike
runs out of air at higher engines speeds. These cams are
used in the ’07 and later street legal 1690 Stage II kits and
the 110 Stage Kits. Compression releases may be required
depending on displacement and compression ratio. For race
application only.
25638-07 $299.95
Fits ’06-later Dyna, and ’07-later Softail and Touring models.
I know of several other 110's where the cams were replaced. All had 255 in them.

JW