- 449cc five-valve DOHC liquid-cooled engine is super-powerful yet tractable.
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- 39mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) and leak jet delivers precise fuel/air mixture and instant throttle response.
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- Revised CDI ignition keeps that amazingly broad and deep powerband hard-hitting, yet controllable.
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- Lightweight, titanium valves and load-reduced springs minimize reciprocating mass for fast-revving, hard-hitting power delivery across the rev range.
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- Additional weight-saving engine features include: small-design cam chain tensioner and oil pump, aluminum oil hose, all-titanium exhaust header, flange, bracket and heat shield and light CDI ignition unit.
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- Primary kickstarting with automatic decompression and convenient handlebar-mounted hot start lever ensures easy restarts.
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- Kick pinion gear is separate from the primary driven gear for smoother clutch engagement.
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- Large-capacity radiator is reinforced for greater strength.
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