American Railcar Industries 10-K 2007 FY Annual report

Exhibit 21.1

American Railcar Industries, Inc. wholly owns the following companies:

               Subsidiary

1.	Castings LLC, a Delaware limited liability company
2.	Southwest Steel I, LLC, a Texas limited liability company
3.	Southwest Steel II, LLC, a Texas limited liability company
4.	Southwest Steel III, LLC, a Texas limited liability company
5.	ARI Fleet Services of Canada, Inc., a corporation registered in Toronto, Ontario, Canada
6.	ARI Acquisition Sub, LLC, a Delaware limited liability company
7.	Amrail Industries, Inc., a Delaware corporation
8.	ARI Longtrain, Inc., a Delaware corporation
9.	ARI Component Venture, LLC, a Delaware corporation

Castings, LLC is a joint venture partner in Ohio Castings Company, LLC, a Delaware limited liability company.

ARI Component Venture, LLC is a joint venture partner in Axis, LLC, a Delaware limited liability company, which owns Axis Operating Company LLC, a Delaware limited liability company.