Kawasaki Ninja EX250 Stock Compared to Supersport Built Engine (Leo Vince Exhaust)

2008/2012 Stock Kawasaki Ninja EX250 with Leo Vince Exhaust Compared to Spears Racing Built Supersport/Production Race engine

2008/2012 Stock Kawasaki Ninja EX250 with Leo Vince Exhaust Compared to Spears Racing Built Supersport/Production Race engine, Using all Stock OEM parts, Supersport Style valve job, Machined surfaces to tighten up the Squish, Degreed stock camshafts, Stock air box with snorkel, SP05-250 Jet Kit, All on Pump Gas 91 octane

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