Model Number

YFZ450

Key Features: * The lightest, most powerful 450 class ATV, winner of just about every magazine shootout, 2004/2006 GNCC® and Quadcross® Championships, 2005/2006 World Four-Stroke Champion and ATV Illustrated’s 2007 Sport ATV of the Year (a tie with our own Raptor 700R). * Most powerful, industry-exclusive five-titanium valve engine and 350-pound dry weight give the YFZ450 the best power-to-weight ratio. * Ultra-compact, lightweight, high-tensile steel frame with fully adjustable suspension means YFZ450 is also the best-handling race-bred ATV ever produced. * The YFZ450 comes standard with pushbutton electric starting, a convenient flip-type parking brake and suspension calibrated for performance. Engine: * 449cc liquid-cooled, DOHC four-stroke with five titanium valves features 95mm bore and 63.4mm stroke for massive power with high over-rev capacity and crisp, linear throttle response. * Large-capacity radiator is optimally mounted in the frame to guard against damage. * Reliable, pushbutton electric start in any gear adds extra convenience. * High-performance 39mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) delivers ultra-precise fuel/air mixing and crisp throttle response. * Additional weight-saving engine features include: magnesium cylinder head cover and right-side crankcase cover; small-design cam chain tensioner and oil pump; aluminum oil hose; and light CDI ignition unit. * Trick, works-style clutch lever features oversize barrel adjuster for easy, no-tool adjustability of lever/cable play. * Dry-sump engine carries oil in an aluminum tank directly in front of the engine for excellent cooling and optimal protection from rocks or mud. * DC ignition system delivers ultra-precise spark and 3D timing for faster, stronger engine response during hard acceleration. * High-performance stainless steel exhaust header is mated to a USFS-approved spark arrestor. * Smooth-shifting YZ-spec ratchet-type five-speed transmission and heavy-duty clutch deliver all that power to the rear tires with maximum efficiency.* Large capacity airbox features no-tool access to the oiled dual foam filter for easy maintenance. * Ignition coil is integrated into the spark plug cap; extremely light and compact. Chassis/Suspension: * Independent aluminum upper A-arm front suspension features competition-spec piggyback shocks with 9.1 inches of travel and adjustable preload, rebound and high- and low-speed compression damping. * Rear suspension system is YZ linkage-type, controlled by a fully adjustable Showa shock with 10.6 inches of travel with adjustable preload, rebound and high- and low-speed compression damping. * Ultra-rigid cast aluminum swingarm reduces weight and ensures optimal suspension action.