TS550 Camshafts for Thunderstroke 111 Higher valve lift and more duration means power from 2000–6000 RPM, stock or modified engines, use with Stock Springs

15-19 Indian Bagger, 20, 23 Chieftain, 20 Chieftain Classic, 20-21, 23 Springfield, 21 Springfield Dark Horse, 22 Springfield , 24 Springfield 111, 24 Chieftain 111, 24 Super Chief 111, 13-19 Indian Cruiser, 20-21 Chief Vintage, 20 Chief Dark Horse, 22 Super Chief Limited, 15-19 Indian Touring