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YZ450F™-Based GNCC®/Hare Scrambles Focused Racer
The YZ450FX™ is developed from Yamaha’s flagship motocross model—the YZ450F—with many added features and unique settings that make the YZ450FX the ultimate GNCC®/Woods racer.
Yamaha Power Tuner App
Yamaha’s exclusive Power Tuner app puts the flexibility and precision tunability of the GYTR® Power Tuner into your smartphone. Make fueling and ignition timing changes instantly and upload them to the bike for the ultimate in track-side tuning.
Adjustable Engine Mapping
A handlebar-mounted map switch allows the rider to quickly select between preloaded engine maps—loaded and configured in the Power Tuner app—to account for changing track and weather conditions.
Electric Starter System
Utilizing a compact starter motor and ultra-lightweight lithium battery, the YZ450FX maintains the convenience of push-button starting, for effortless restarts under pressure, and relaxed riding when the clock isn’t ticking.
Potent Fuel-Injected Engine
A high-compression cylinder head, forged piston, aggressive cam profiles, cylinder geometry and much more work together to give riders the ideal power spread in challenging GNCC® racing conditions.
Yamaha uses KYB® spring-type forks on all of our YZ® models, with industry leading function and easy set-up at the track—these forks are ready for the top step of the podium straight out of the box.
YZ450FX R144 950
Type Liquid-cooled, DOHC, 4-stroke, 4-valves, rearward slanting single
Bore x stroke 97.0 mm x 60.8 mm
Compression ratio 12.8 : 1
Maximum horse power –
Maximum torque –
Starting system type Electric
Lubrication system Wet sump
Clutch type Dual side grinded clutch plate
Fuel system Fuel Injection
Ignition system TCI
Transmission system Constant mesh, 5-speed
Final transmission system Chain
Frame Bilateral beam frame
Front suspension Upside-down telescopic fork
Front wheel travel 310 mm
Rear suspension Swingarm, (link suspension)
Rear wheel travel 317 mm
Caster angle 27⁰ 15′
Trail 121 mm
Front brake Hydraulic single disc, Ø 270 mm
Rear brake Hydraulic single disc, Ø 245 mm
Front tyre 80/100-21 51M
Rear tyre 110/90-19 62M
Overall length 2,185 mm
Overall width 825 mm
Overall height 1,285 mm
Seat height 965 mm
Wheelbase 1,485 mm
Min. ground clearance
Wet weight (including full oil and fuel tank)
Fuel tank capacity
Power Tuner App
It enables the rider to modify fuel and iginition settings for optimized
performance using a smartphone. The app communicates wirelessly with the