Sport Rider Photos
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This CAD drawing illustrates how compact the engine is. A 65-degree Vee angle was chosen to give the straightest path for the intake air to flow. A 22-degree included valve angle also keeps the package compact. Titanium intake valves are needed for speeds the engine is capable of, but steel exhaust valves remain, for all things, to keep costs down.
2010 Aprilia RSV4 Factory CAD Drawing