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Internal-combustion engine, in particular for motorcycles — Harley-Davidson patent US6578541B2 (2003)

PatentUS6578541B2
TypeUtility patent
Filed2001-06-15
Granted2003-06-17
InventorRoland Stromsky
SystemEngine

“The invention relates to an internal-combustion engine, in particular for a motorcycle. The motorcycle engine preferably includes a crankshaft rotatable about an axis, a web coupled to the crankshaft, and curved wall portions surrounding the crankshaft. The web has an outer surface which defines a…”

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Drawings (2 sheets)

Internal-combustion engine, in particular for motorcycles — sheet 1Internal-combustion engine, in particular for motorcycles — sheet 2

Parts for this system

32-0064
Magneto to Crankcase Oil Seal Ring and Gasket Kit
$6.35
14-0555
Rear Caliper Piston O-Ring
$10.64
15-1380
Rear Master Cylinder Gasket Kit
$10.64
23-0825
Handlebar Master Cylinder Piston Cup
$10.64

Check fitment first — add your bike and we flag what fits.

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Drawing from the US patent record (via Google Patents). A patent shows the invention as filed, not necessarily the production part on your motorcycle — confirm fitment for your model and year. Independent aftermarket retailer, not affiliated with Harley-Davidson, Inc.