You know, I think I got the picture. Harley bean counters see all the shops like T-Man, S&S, etc. building HOT 2006+ motors for guys who have not been stung by the recession, and they said "screw this, we are getting in the mix".
They not only come out with a fully developed set of machined and modded cases, but also get a JIMS trued crank, most likely JE or Wiseco pistons, big flow heads, etc. and build a nice 120" mill.
THEN they even go outside the box with these add-on's to a nice setup:
Screamin’ Eagle Pro Hurricane CNC Oval Ported Cylinder Heads
Engineered to maximize the track performance potential of
the SE120R race-engine, these Hurricane Cylinder Heads
are ready to complete your Race Xtreme conversion. These
black-highlighted cylinder heads have been meticulously
CNC-machined for efficient air flow, and the machined raised
oval intake ports allow a straighter shot into the combustion
chamber. The heads feature large 2.175" intake and 1.635"
exhaust valves that are held in check with a set of Screamin’
Eagle Race Valve Springs with T itanium upper collars that
allow use of cams with up to .660" valve lift. All EFI models
require ECM calibration (priced separately). For race application
only.
17799-10 Black Highlighted. $1,599.95
Fits ’06-later T win-Cam engines equipped with Oval Port
High-Flow Intake Manifold P/N 27082-10 and High-Flow
62mm EFI T hrottle Body P/N 27300019.
Screamin’ Eagle Pro Twin Cam Forged 12:1
Compression Piston Kit*
These race-only ultra-high-compression pistons squeeze
every bit of power out of the 120R engine. Forged from
high-strength aluminum, these 12.0:1 compression pistons
feature nickel-plated surfaces for enhanced durability, and
a special T eflon