Key performance
Technical specifications
- Displacement
- 449 cc → 450 cc
- Power
- — → 51.0 ch (37.5 kW)
- Compression ratio
- 12.3:1 → 13.0:1
- Bore × stroke
- 95.0 x 63.4 mm (3.7 x 2.5 inches) → 97.0 x 60.8 mm (3.8 x 2.4 inches)
- Valves/cylinder
- — → 4
- Camshafts
- — → 2 ACT
- Fuel system
- Carburettor. Keihin® FCR 39 → Injection. Mikuni® fuel injection, 44mm
- Lubrication
- — → Dry sump
- Ignition
- CDI → TCI
- Starter
- — → Electric
- Frame
- — → Aluminium beam frame with optimised rigidity
- Clutch
- Wet, multiplate → Multiplate wet clutch
- Front suspension
- Inverted fork → KYB® Speed-Sensitive System inverted fork; fully adjustable
- Rear suspension
- Single shock → KYB® single shock; fully adjustable
- Front wheel travel
- 300 mm (11.8 inches) → 310 mm (12.2 inches)
- Rear wheel travel
- 305 mm (12.0 inches) → 318 mm (12.5 inches)
- Front brakes
- Single disc → Single disc. Hydraulic.
- Rear brakes
- Single disc → Single disc. Hydraulic.
- Front tyre
- 80/80-M21 → 80/100-21
- Front tyre pressure
- — → 1.00 bar
- Rear tyre
- 110/90-M18 → 120/90-18
- Rear tyre pressure
- — → 1.00 bar
- Seat height
- 980.00 mm → 955.00 mm
- Wheelbase
- 1486.00 mm → 1481.00 mm
- Ground clearance
- 366.00 mm → 320.00 mm
- Height
- 1295.00 mm → 1270.00 mm
- Fuel capacity
- 7.94 L → 8.33 L
- Weight
- 122.90 kg → 118.80 kg
- New price
- — → 9 299 €
Engine
- Displacement
- 450 cc
- Power
- 51.0 ch (37.5 kW)
- Engine type
- Single cylinder, four-stroke
- Cooling
- Liquid
- Compression ratio
- 13.0:1
- Bore × stroke
- 97.0 x 60.8 mm (3.8 x 2.4 inches)
- Valves/cylinder
- 4
- Camshafts
- 2 ACT
- Fuel system
- Injection. Mikuni® fuel injection, 44mm
- Valve timing
- Double Overhead Cams/Twin Cam (DOHC)
- Lubrication
- Dry sump
- Ignition
- TCI
- Starter
- Electric
Chassis
- Frame
- Aluminium beam frame with optimised rigidity
- Gearbox
- 5-speed
- Final drive
- Chain (final drive)
- Clutch
- Multiplate wet clutch
- Front suspension
- KYB® Speed-Sensitive System inverted fork; fully adjustable
- Rear suspension
- KYB® single shock; fully adjustable
- Front wheel travel
- 310 mm (12.2 inches)
- Rear wheel travel
- 318 mm (12.5 inches)
Brakes
- Front brakes
- Single disc. Hydraulic.
- Rear brakes
- Single disc. Hydraulic.
- Front tyre
- 80/100-21
- Front tyre pressure
- 1.00 bar
- Rear tyre
- 120/90-18
- Rear tyre pressure
- 1.00 bar
Dimensions
- Seat height
- 955.00 mm
- Wheelbase
- 1481.00 mm
- Ground clearance
- 320.00 mm
- Length
- 2174.00 mm
- Width
- 826.00 mm
- Height
- 1270.00 mm
- Fuel capacity
- 8.33 L
- Weight
- 118.80 kg
- New price
- 9 299 €
Overview
Imagine a machine that has already crushed the competition at the ISDE, but where engineers say, "We can still refine it." That's precisely the spirit that drives this 2021 Yamaha WR450F. It doesn't just want to be a champion; it wants to become an absolute benchmark, a weapon for modern enduro. With a price tag approaching €9300, it clearly targets the experienced rider, the one who seeks the sharpest tool to dominate trails and races. The bet is audacious, as the competition in the 450 enduro segment is fierce, but Yamaha has decided to play the card of pure technology, derived directly from the motocross YZ450F.

The heart of this evolution lies in its 450 single-cylinder engine. We're talking about an engine that produces 51 horsepower, a figure that speaks but doesn't tell the whole story. The real revolution is in its design. The engine adopts a reverse cylinder head, an architecture that channels air with remarkable efficiency. The compression ratio climbs to 13:1, and the valves are recalibrated for a more voracious combustion. The result? Power that unfolds with remarkable generosity across the entire range, a torque that always seems available, even during technical bursts. Compared to some competitors who may seem more nervous or brutal, this WR450F offers progressivity that is a major asset in enduro, where control is paramount over excess.
Handling is the second pillar of this transformation. With an announced weight of 118.8 kg fully fueled, it sits within the standard for large enduros, but the feeling on board is different. The new aluminum bilateral beam frame, inspired by the YZ, has been reworked for enduro. Stiffness is optimized, masses are centralized with an obvious obsession. The 8.3-liter fuel tank is well integrated, and the 955 mm seat height demands physical commitment, but once in motion, the bike seems to melt beneath you. The fully adjustable KYB suspensions are precision jewels. The Speed-Sensitive System fork is, in my opinion, one of the best systems available on a production model. It digests violent shocks without ever losing its composure, offering constant traction. Braking, with its hydraulic discs, gains power and modulation, a crucial point when slowing down an energetic machine in precarious conditions.
What truly distinguishes this 2021 WR450F, and positions it as a machine of the future, is its interface with the rider. The Yamaha Power Tuner smartphone application is not a gadget. It's a deep-tuning tool that allows you to adapt the injection and ignition mapping according to the terrain, the weather, and the riding style. The map switch on the handlebar offers an instant change between several preset modes. For the rider who wants to refine their machine, it's an unprecedented freedom. The compact electric starter is a blessing after a fall or during a technical climb. These elements, combined with a modern multifunction dashboard, make this bike a connected, almost "intelligent," product in a world where the race is also played on strategy and adaptation.
In conclusion, this Yamaha WR450F makes no compromises. It is a competition machine slightly civilized, intended for the highly qualified enduro traveler or the serious competitor. It's not the bike to learn off-road riding on; its character demands expertise. Its price is an investment, but it corresponds to the technological density offered. Faced with a KTM 450 EXC-F or a Honda CRF450RX, it offers a different philosophy: less instinctive brutality, more sophistication and electronic control. For those who master the art of tuning and seek a machine that can be sculpted for each race, this WR450F, and its future evolutions like the potential Yamaha WR450F rally or the 2023 Yamaha WR450F and 2024 Yamaha WR450F versions, represents an extremely relevant choice. It's enduro thought of as a precision instrument, where every gram, every horsepower, and every electronic parameter is optimized for victory.
Practical info
- La moto est accessible aux permis : A
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