that sounds like a screamin eagle air cleaner kit.
click on link above.
ok, here's the quick and dirty:
there are 3 kinds of Harleys....V rods, Sportsters and Big Twins.
Sportsters come in 2 basic flavors....1200cc and 883cc.
there are different models of each.
Vrod is a line all it's own and are the only Harleys that do not have a 45 degree V-twin pushrod engine.
they are 60 degree, water cooled, overhead cam engines........not unlike Aprillia's.
these are available as CVO screamin eagles.
Big twins are a bit more diverse.
models include Dyna, Softail, Touring and Trike.
all of these models are available in a standard configuration and some (Dyna. softail and touring) are also available as limited edition CVO (Custom vehicle operations) Screamin Eagle models with a special factory paint job and performance modifications already added, like heads, high compression pistons, cams and already equipped with the stage 1 ECM download.
this paint job is ONLY available to owners of CVO bikes.
Sportsters are NOT available as CVO screamin Eagles.
that said.......Harley has their own trademark performance parts. they are called "screamin eagle" parts. anyone with a Harley can buy and install screamin eagle mufflers, air cleaners, cams, spark plugs, etc.
after this is done, this is NOT a "screamin eagle package". this is a Harley with screamin eagle upgrades.
there are better performance parts available than screamin eagle.
Arlen Ness Big Sucker air cleaners are better than screamin eagle air cleaners.
there are several cam manufacturers. whether you choose screamin eagle or S&S for Andrews, etc depends on what you want the motor to do.
if you want maximum performance, you do a package. the first thing you do is send your heads to someone like BC Gerolomy and tell them what you want such as monster torque or monster horsepower or maybe you want 100 hp and 100 ft-lb torque OR whatever it is you want the engine to do that it doesn't do as-is. they will modify your heads and tell you which cams, carb, fuel injection and compression ratio you need.
once you put that "package" together, you will have exactly what you asked for and it will leave guys with must have 'screamin eagle" air cleaners in your dust.