S&S Cycle Chain Drive Camshaft Kit 551 - 106-4858

Features:

• Designed as bolt-in cam for 05-13 touring bikes with compression ratio between 9:1 and 9:9
• More power across the rpm range, with improved low and midrange torque
• Can be used with stock pushrods, springs and lifters
• Strongest from 0-4,000 rpm
• 99-04 models require high lift springs
• Cams for 06 Dyna and 07-13 Twin Cam are for use with models with hydraulic tensioner chain-drive system; 551C are bolt-in applications,
• all others require high-lift valve springs
• Intake Opening (degrees): 18
• Intake Closing (degrees): 20
• Exhaust Opening (degrees): 39
• Exhaust Closing (degrees): 15
• Intake Duration (degrees): 215
• Exhaust Duration (degrees): 237
• Valve Lift (in): .550
• Note: Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance