550C Chain Drive Camshaft Kit for 2017-Up M8 Models
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550C Chain Drive Camshaft Kit for 2017-Up M8 Models

Item #: 330-0643
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  • 550C is an ideal Horsepower Cam for 114 and larger engines
  • Kits include all required bearings, o-rings, and hardware
  • Made in the USA

Required for installation:
This cam requires Adjustable Pushrods and Heavy Duty Valve Springs. We recommend:
930-0123 Quickee Adjustable Pushrods with Cover Keepers for 2017-up M8 Models
900-0958 Heavy Duty Valve Spring kit for 2017-19 M8 Touring Models

330-0718 Precision Tappet Set Without HL2T Kit For 1999-'17 HD Big Twins, 2000-'20 HD® Sportster®, and 2017-20 M8 Models (Tappets should be replaced every time that the cam is replaced)

Cylinder Valve Timing Valve Duration Valve Lift Lobe Center Line Valve Lift @ TDC
Intake Exhaust Intake Exhaust Intake Exhaust Intake Exhaust Intake Exhaust
Open BTDC/ Close ABDC Open BBDC/ Close ATDC
Front 9.4/29.4 62.5/30.5 218.9 273.1 .550 .550 100.0 106.0 .127 .232
Rear 3.1/31.1 59.4/38.4 214.2 277.8 .550 .550 104.0 100.5 .099 .264

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NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE. Not legal for sale or use on any EPA pollution controlled motor vehicle.