Yamaha Yz450f
The Yamaha YZ450F was introduced in 2003 as an evolution of the YZ400F/426F lineage, replacing the two-stroke era with a potent four-stroke motocross machine. It gained a landmark redesign in 2010 with a reversed cylinder head and forward-facing exhaust, and again in 2018 with electric start and a smartphone-tunable fuel injection system. It has consistently been one of the most race-winning and technically advanced motocross bikes in the 450cc class, with numerous AMA Supercross and Motocross championships to its name.
Approximately 60–63 hp
Power
Approximately 53–55 Nm
Torque
110 kg
Weight
Approximately 145–155 km/h (estimate based on dyno and track testing; not an officially published figure)
Top Speed
Estimated 6–8 L/100km under typical motocross/off-road use (note: highly variable depending on riding intensity; no official road consumption figure exists for this competition-focused bike)
Fuel
Naked
Body
What Buyers Should Know
Reverse Cylinder Reliability
The YZ450F's unique reverse-inclined cylinder design lowers the center of gravity and improves mass centralization. This layout has proven highly durable, but valve clearances should be checked every 15 hours to avoid costly engine wear.
Built-In Bluetooth Tuning
2018 and newer models include a Bluetooth-enabled Power Tuner app, letting riders adjust fuel maps and engine braking without a dealer visit. This feature adds real value and is rare among competitors in its class.
Strong Resale Value
The YZ450F consistently holds its value better than most motocross bikes, often retaining 70–80% of its price after one year with proper maintenance. Low-hour, well-documented bikes are especially sought after in the used market.
Full Specifications
Rivals & Alternatives
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