G-Force began constructing chassis for the Indy Racing League as one of their original chassis fabricators beginning with the 1997 season (others were Dallara and Riley &amp; Scott). G-Force chassis won the Indianapolis 500 in its first attempt in 1997 with Treadway Racing's Arie Luyendyk, sweeping 1–2–3 finishing positions. The first generation G-Force IRL chassis competed in the series from 1997–1999.