Harley Davidson Sport/Street Bike Valves & Valvetrain Parts

The operation of your Harley Davidson’s internal combustion engine is controlled by the valvetrain assembly consisting of valves, valve springs, rocker arms, pushrods, lifters, camshafts, and other related parts. The shape of the cams, the length of pushrods and valve stems directly affect the duration and timing of opening and closing of valves and thus the volume of the air-and-fuel mixture that enters the combustion chambers and exhaust gases that the pistons need to push out of the engine. Camshafts in Harley V-Twin motors are located under the cylinder heads close to the crankshaft and are rotating synchronously.

Camshafts are driven by the crankshaft through timing chain are pushing pushrods which in turn activate the rockers and lifters that open and close valves. When hydraulic lifters are worn or sticking, they start producing noise. Excessive wear can be caused by insufficient lubrication, low oil pressure or varnish buildup. If you experience any problems with your Harley Davidson motorcycle valves and valvetrain parts, get your two-wheeled machine checked by your trusted mechanic. When it is time for repair, you can always find a full range of replacement parts in our virtual catalog. Besides main valvetrain parts, we offer valve seals and inserts, valve locks, shims, spring keepers, rocker arm bushings, and much more.