Key Features:

More power than ever and winner of just about every magazine shootout and US GNCC and GNC Championships, the YFZ is back and even more unstoppable than before.

  • Powerful, industry-exclusive, five-titanium-valve engine and 159kg dry weight give the YFZ450 the best power-to-weight ratio of any ATV ever produced.
  • Ultra-compact, lightweight, high-tensile steel frame with fully adjustable suspension.
  • 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 race bred suspension calibrated for performance.
  • New ergos, thicker seat and longer-travel rear suspension make riding hard not hard at all.

 New for 2006:

  • Even more performance: a larger, more powerful, 449cc engine, revised carburation, head design and ignition timing produce even more of an excellent thing—and an increased-capacity radiator keeps it cool.
  • New, titanium heat shield is super light and strong.
  • New larger-capacity radiator is optimally mounted in the frame to guard against damage.
  • More comfort: a longer steering stem, new handlebars and a thicker seat make riding the YFZ450 hard not hard at all.
  • Longer travel out back means an excellent ride and handling.
  • Aluminium grab bars are light and strong.
  • New, eccentric chain adjuster mechanism simplifies that job, and a new, twin-piston rear brake caliper provides strong, controllable rear braking.
  • New tyres provide excellent traction, handling and ride quality.
  • New LED taillight is bright, tough and draws less current.

 Engine:

  • Liquid-cooled, 449cc, five-valve, DOHC, four-stroke with titanium valves features 95mm bore and 63.4mm stroke for massive power with high over-rev capacity and crisp, linear throttle response.
  • Reliable, pushbutton electric start in any gear adds extra convenience.
  • High performance 39mm Keihin FCR flat-slide carburettor 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; aluminium 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 aluminium 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.
  • 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 aluminium upper A-arm front suspension features fully adjustable competition-spec Kayaba piggyback shocks with 231mm of travel and separate adjusters for preload, rebound and compression damping.
  •  New rear suspension system is YZ linkage-type, controlled by a fully adjustable Showa shock with 269mm of travel and separate adjusters for preload, rebound and compression damping.
  • Ultra-rigid cast aluminium swingarm reduces weight and ensures optimal suspension action.
  • Numerous aluminium components—including the swingarm, upper A-arms, oil tank and wheels—help keep overall dry weight down to a paltry 159kg.
  • Controlled Fill cast aluminium subframe is light and super-strong
  • Lightweight front and rear master cylinders, combined with twin 160mm front discs with twin-piston calipers and single 200mm rear disc, deliver incredible stopping power with progressive control and feel.
  • New high-performance 21 x 7R-10 front and 20 x 10R-9 rear Dunlop radials, designed specifically for the YFZ450, deliver superb, class-leading traction.
  • Long, low and narrow YZ-style seat enhances the quick, balanced steering and optimal rider movement.

 Additional Features:

  • Rugged 45mm-wide serrated footrests provide excellent grip and rider comfort.
  • Large-capacity, 9.8 litre fuel tank ensures excellent range.
  • Dual 30-watt multi-reflector halogen headlights set back in the front cowl add the perfect menacing appearance. Taillight has an incorporated brake light for added convenience.
  • Easy-to-use, toggle link-type handlebar-mounted parking brake can be set with one hand.