BRAND NEW PART# 330-0100 FITS: 1999-2006 BIG TWIN MODELS EXCEPT 2006 DYNA 551G Series Grind Cams Gear Drive Driven Cams Designed as bolt-in cam for touring bikes with compression ratios between 9:1 and 9:9 More power across the rpm range, with improved low and mid range torque Can be used with stock pushrods, springs, and lifters unless noted below Strongest from 1000-4000 RPM 1999-2004 Twin Cams require Higher Lift Valve Springs (which are available from us) Intake Opening (degrees): 18 Intake Closing (degrees): 20 Exhaust Opening (degrees): 39 Exhaust Closing (degrees): 15 Intake Duration at .053 (degrees): 215 Exhaust Duration at .053 (degrees): 237 Intake Lift (in): .550 Exhaust Lift (in): .550 TECH NOTE: ADJUSTABLE PUSHRODS ARE AVAILABLE IN OUR EBAY STORE For any bolt in cam grind, EZ-install pushrods do not require removal of gas tanks or rocker boxes for installation.