The Superior Induction Hardening System.
"Greater than 25 years of gears"

Indianapolis Motor Speedway Participation

Contour Hardening, Inc. has a long tradition with the Indianapolis Motor Speedway. CHI has participated at IMS for many years and has helped sponsor multiple cars, including the car below. As shown on the Contour Performance Products page, gears hardened by CHI have been proven to be winners on the track. There is nothing better than having a product in the Winner's Circle at the most famous race track in the world!