2013 Kawasaki KFX® 450R ATV

Whether you're competing for a trophy or just bragging rights with your buddies, the KFX®450R is the sport ATV to put you on top. Its nimble chassis and long A-arm front suspension are complemented by a powerful engine with digital fuel injection (DFI®) and a compact electric starter, for precise throttle response and easy starting.

At a glance…
• 449cc DOHC engine provides a broad torque curve and optimized power delivery for quick acceleration without excessive wheelspin
• Digital fuel injection promotes crisp engine response
• Lightweight reverse gear system is easy to use, perfect for getting out of tight situations
• Electric starting facilitates quicker stall recovery and lowers rider fatigue
• The aluminum frame's rigidity enhances stability in corners and allows the suspension to be easily tuned to suit course conditions
• Dual-rate front springs and adjustable rear shock provide excellent rough-terrain handling
• Hydraulic disc brakes offer strong, consistent stopping performance

449cc Liquid-cooled, DOHC, Four-valve, Four-stroke Single
• Lightweight forged piston reduces reciprocating weight
• Triple piston rings and a 21mm diameter piston pin help increase durability and reduce necessary maintenance
• Lightweight titanium valves and aluminum valve spring retainers reduce reciprocating weight and boost high-rpm reliability
• Asymmetrical high-acceleration cams yield high intake efficiency
• Electric starting facilitates quicker stall recovery and lowers rider fatigue
• Large-volume airbox contributes to both intake efficiency and sharp engine response. An air duct fashioned from polyethylene resists deformation caused by intake pulses and helps ensure stable engine performance
• Advanced engine tuning provides a broad torque curve and an optimized power delivery for quick acceleration without excessive wheelspin

Digital Fuel Injection (DFI®)
• 32-bit digital fuel injection system with a 42mm throttle body
• System measures coolant temperature, air intake temperature, air intake pressure, engine speed and throttle position, then automatically delivers the ideal amount of fuel to optimize power delivery
• Crisp engine response is especially advantageous for instant acceleration after landing from jumps
• Promotes trouble-free starting - a great benefit in races with engine off starts
• Fuel injection allows the use of a lighter throttle return spring, which reduces rider fatigue