Serious racers will tell you that the Yamaha YFZ450R is the clear favourite with
winning riders. Its sharp-handling chassis and ultra-responsive 450cc engine
have made it today’s number one racing ATV. Nothing else comes close

A
race-bred assist and slipper clutch gives more precise control over corner entry
speed for quicker lap times – while the race-bred engine delivers superfast
throttle response and hard-hitting high rpm power for holeshot-winning
performance.

Sharp-designed bodywork gives the rider space to shift the bodyweight during
cornering or hard acceleration. And the lightweight piggyback shocks make for
razor-sharp handling!

Engine

Engine type Single cylinder, liquid-cooled, 4-stroke, DOHC, 5-valves
Displacement 449cc
Bore x stroke 95.0 mm x 63.4 mm
Compression ratio 11.8 : 1
Lubrication system Dry sump
Fuel system Fuel Injection 42 mm EHS with ISC
Ignition system TCI
Starter system Electric
Transmission system 5-speed, manual slipper clutch
Drive system 2WD
Final transmission Sealed O-ring chain, eccentric adjustment

Chassis

Front suspension system Independent double wishbone, threaded preload adjustable dual-rate
coil-over springs, 3-way adjustable damper, 250 mm stroke
Rear suspension system Cast aluminium swingarm, threaded preload adjustable coil-over
springs, 3-way adjustable damper, 280 mm stroke
Front brake Dual ventilated disc with hydraulic twin piston callipers
Rear brake Wave-type ventilated disc with twin piston callipers
Front tyres AT21x7R10
Rear tyres AT20x10R9

Dimensions

Overall length 1,795 mm
Overall width 1,240 mm
Overall height 1,065 mm
Seat height 810 mm
Wheelbase 1,270 mm
Minimum ground clearance 115 mm
Wet weight (including full oil and
fuel tank)
184 kg
Fuel tank capacity 10.0 litres