Your stock 108 cubic-inch liquid-cooled PowerPlus engine in Indian’s excellent Challenger delivers 122 horsepower and 128 ft-lbs. of torque, claims Indian. By pairing these new Stage 2 Performance Cams with Indian’s PowerPlus Stage 1 Air Intake and Stage 1 Slip-On Exhaust, “riders will experience the unquestionable sensation of increased power the moment they twist the throttle,” to the tune of 10%. We were assured there would be no math, but that should be 12 more hp and 13 more ft-lbs. (Our stocker made 95 hp and 112 ft-lbs at the rear wheel in our Dec. 2019 Indian/H-D comparison.)

Indian Press Release:
MINNEAPOLIS (January 12, 2021) ? In 2019 Indian Motorcycle reimagined what an American bagger could be with the introduction of the Indian Challenger. In 2020 the Challenger?s superior performance capabilities were dramatically validated with its victory at MotoAmerica?s inaugural King of the Baggers race at the historic Laguna Seca Raceway. Now the ultimate American bagger gets an extra dose of muscle with the introduction of Indian Motorcycle?s all-new Stage 2 PowerPlus Performance Cams ? the same cams that helped power S&S? Indian Challenger to victory at Laguna Seca. Featuring best-in-class stock performance, the Indian Challenger gains 10% more horsepower with the Stage 2 upgrade kit ? providing a new level of unmatched passing power and American bagger performance. Representing Indian Motorcycle?s most powerful engine ever, the stock 108 ...