S&S Cycle 551 Cam Kit For Harley Twin Cam 2006-2017

S&S Cycle 551 Camshaft Kit For Harley Twin Cam

S&S has a long-standing reputation for enhancing Harley-Davidson motorcycles' performance, with their camshafts being no exception. These cams are an excellent choice for riders looking to upgrade their engine's power, particularly after installing numerous 'bolt-on' modifications. Each S&S cam is designed to optimize engine output to match a rider's unique style, offering a significant boost in performance.

Features:

• All chain drive cams include installation kit
• Made in the USA

551 Cam Info:

• Originally designed as a bolt-in, high-torque cam for Touring bikes with compression ratios between 9:1 and 9:9
• More power across the RPM range, with improved low and midrange torque
• Strongest from 1000 RPM-4000 RPM
• Can be used with some engines with stock valve springs, pushrods, and lifters; high-lift valve springs may be required for some applications
• Centerline Intake:92.5°
• Duration Exhaust @ .020:237°
• Grind:551C
• Lift @ Top Dead Center Intake:.163"
• Duration Intake @ .020:215°
• Lift @ Top Dead Center Exhaust:.179"
• Lift:.550"
• Valve Timing Exhaust:39°/18°
• Centerline Exhaust:100.5°
• Valve Timing Intake:15°/20°