Acura has so many variations, colors, names, sizes, etc. of this particular wheel that I don't know what to call them. Even many people who own them are unaware of what finish or size they have.
I'll do my best to describe all the variations of this wheel.
As far as I know, all variations of this wheel are manufactured for Acura by Enkei.
Back in 2001, Acura showed a prototype RSX at SEMA. It had a widebody kit and 19" black chrome wheels. The first time I saw these wheels I fell in love with them, and they still look great to me today.
When the A-Spec package was originally announced for the current TL, it came with an 18" x 8.5" 45 offset wheel in gunmetal. It came to be known as the A-Spec wheel, because dealers could not order the wheel outside of the package. At that point in time, Acura didn't break any packages. This wheel doesn't fit the TSX all that well due to the 45 offset combined with the 8.5" width, although if lowered, it would look alright.
When the TSX A-Spec prototype was shown, it had a chrome version of this rim, also 18", don't know the width since it was never released for sale but judging by how it sticks out, it's probably 8.5".
When the actual TSX A-Spec hit the market, it had a 17" x 7.5" 55 offset version of this rim, in yet another finish. This rim is supposed to be available only with the TSX A-Spec package, but some dealers list them separately. Part # 08W17-SEC-200B
Okay, now things really get confusing. For the '05 TL, Acura announced two new variations on the "A-Spec" rim, as well as changes to the A-Spec TL rim. The '05 A-Spec rim is now 8" wide, still 45 offset, and comes in a high polish finish. The part # is 08W18-SEP-200B.
The other two are just optional rims for the TL. They're listed as high performance, or accessory rims. They have new finishes, and are also 18" x 8", 45 offset. People are all the time referring to them as A-Spec rims, but they are not part of an A-Spec package; they just look like the A-Spec package rims.
One color is a reflective chrome. Part # 08W18-SEP-200C.
I can't find a good picture of this one. The sellers on ebay use one picture for all their ads, so that's no help. And I think that any real pictures of this rim don't show what it really looks like because they're so reflective that they always look a different color.
The other is Silver Sparkle. Part # 08W18-SEP-200D.
Now, the rim in the beginning of this thread is a TSX accessory wheel. It looks just like the TSX A-Spec wheel, same size as the TSX A-Spec wheel, but it has the Silver Sparkle finish and is not part of the A-Spec package. The part # for this wheel is # 08W17-SEC-200C.
The Silver Star is an entirely different design, but still an accessory wheel. The Silver Star is an 17" x 7" 55 offset wheel.