S&S Cycle 106-5441 551GE Easy Start Gear Drive Camshafts with Inner Gears Only

S&S 551GE Gear Drive Easy Start cam is designed to greatly improve valve timing accuracy by eliminating timing chain lash and Easy Start Cams allow stock starter to start any engine. Kit includes cams with inner gears. Intake Opening (degrees): 17. Intake Closing (degrees): 19. Exhaust Opening (degrees): 41. Exhaust Closing (degrees): 17. Intake Duration (degrees): 215. Exhaust Duration (degrees): 237. Intake Lift (in): .550. Exhaust Lift (in): .550. Intake Lift at TDC (in): .178. Exhaust Lift at TDC (in): .170 S&S 551GE Gear Drive Easy Start cam is designed to greatly improve valve timing accuracy by eliminating timing chain lash and Easy Start Cams allow stock starter to start any engine. Kit includes cams with inner gears. Intake Opening (degrees): 17. Intake Closing (degrees): 19. Exhaust Opening (degrees): 41. Exhaust Closing (degrees): 17. Intake Duration (degrees): 215. Exhaust Duration (degrees): 237. Intake Lift (in): .550. Exhaust Lift (in): .550. Intake Lift at TDC (in): .178. Exhaust Lift at TDC (in): .170 For 1999-2004, these cam are not bolt in and need special springs. These cams are bolt in for 2005-2006 and can use stock springs. Camshaft set with inner gears only. Installation gasket and hardware kit not included. 551 cams are not recommended with compression ratio of 10:1 or higher.