At present, aluminium accounts for 9% of a typical vehicle's content mostly in the form of castings and forgings for engine blocks, transmission cases, wheels and suspension parts.

ECONOMIST: Tech.view: Unbearable lightness? | The

Mr. McCurdy, a 15-year veteran of the circuit, had spent more than a month working with a friend at night and on weekends to modify a brand-new Ski-Doo snowmobile with new cylinders, suspension system, shorter skis and other parts his first new sled in five years.

WSJ: Snowmobile Riders Race Over Water on Minnesota Lakes

The Kenseth penalties come on the heels of NASCAR penalizing Penske Racing for using parts it said were unapproved in the rear suspension of its cars at Texas.

NPR: NASCAR Penalizes Kenseth After Engine Fails

Leaf springs, its high-volume product that accounts for 67% of its auto parts sales, are fairly simple, low-capital-intensive suspension components.

FORBES: Made in Mexico