If thats the kit you bought then you have the 103+ heads these pistons are designed for them but check with harley just to make sure. They look like the 103+ heads though.
SCREAMIN’ EAGLE PRO TWIN CAM STROKER
PISTONS FOR “103+” CYLINDER HEADS*
These 3-7/8" Big Bore forged pistons feature a dome
shape that is matched to the Screamin’ Eagle “103+”
Cylinder Heads to maximize horsepower output. When used
in combination with the Screamin’ Eagle 103+ Cylinder
heads, Screamin’ Eagle Stroker Flywheels or 2007 Twin
Cam models with stock 4-3/8" stroke flywheels, and Big
Bore Cylinders, the resulting compression ratio is 10.5:1.
Complete kit includes pistons, rings, wrist pins and clips.
All EFI models require ECM calibration* (priced separately).
For race application only.
103 C.I. Big Bore
Fits ’99-later Twin Cam models equipped with Screamin’
Eagle 103+ Cylinder Heads, Screamin’ Eagle Stroker
Flywheels or 2007 Twin Cam models with stock 4-3/8"
stroke flywheels, and Big Bore Cylinders.
22483-04 Standard Bore (pair). $279.95
22484-04 .005" o/s (pair). $279.95
22485-04 .010" o/s (pair). $279.95