ID # 35147547

2025 Yamaha YFZ450R

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CHAMPIONSHIP COLLECTOR. Boasting podium‑topping DNA and serious racing pedigree, this is the unmatched, race‑ready Sport ATV for those who want to win.

Specifications

Model

YFZ

Category Name

ATVs

Year

2025

Manufacturer

Yamaha

Color

Team Yamaha Blue

highlights

CAPABILITY

The YFZ450R is the most technologically advanced Sport ATV on the market today. It combines a high-tech, quick-revving, titanium-valved, 449cc fuel-injected engine with a lightweight, professional-caliber cast aluminum/steel chassis. The power and chassis combination makes for a championship-winning machine time and time again.

COMFORT

The YFZ450R is motocross-ready. The weldless frame is designed from lightweight aluminum with a tension-steel bottom frame that lets the engine sit lower for excellent mass centralization. Suspension components and settings reduce weight while providing light, sharp handling and rider comfort.

CONFIDENCE

With more room to hang off in the corners, the bodywork is designed for great ergonomics and rider comfort. The seat shape is padded in just the right places while the body panels come off easily without tools for service, so there’s no need to remove the battery or other components to take the fenders off.

key features

Race-Ready Engine
Fuel Injection
Assist and Slipper Clutch
Race-Ready Ergonomics
Adjustable Handlebar
High-Performance Shocks

features & benefits

ENGINE

Powerful Engine
- The YFZ450R is the most technologically advanced sport ATV on the market today. It combines a high-tech, quick-revving, titanium-valved, 449cc fuel-injected engine with a lightweight, professional-caliber cast aluminum/steel chassis. The power and chassis combination makes for a championship-winning machine time and time again.
Advanced Cylinder Head
- The 449cc engine uses a five-valve cylinder head and titanium valve technology to deliver abundant power in the mid-range to top end with more “hit” feeling right off idle. The high compression ratio further improves overall engine performance.
Fuel Injection
- The YFZ450R incorporates Yamaha Fuel Injection (YFI) for precise fuel delivery. With a big 42mm Mikuni® throttle body and 12-hole injector, this system provides exceptional atomization of the fuel for maximum power. The system also includes ISC (Idle Speed Control) for easy, reliable start-up and warming.
Assist and Slipper Clutch
- An assist-and-slipper clutch reduces clutch lever effort for less fatigue while at the same time increasing clutch plate pressure for positive engagement. This clutch system also reduces engine braking effect for faster cornering, particularly when downshifting.
Compact Counterbalanced Engine
- The crankcase holds a crankshaft that’s ready to handle the increased demands of the racer as well as the counterbalancer to reduce vibration. The crankcase also houses the oil tank which helps to centralize mass for unmatched handling while making maintenance easier.
Tuned Camshafts
- Camshafts have been revised to maximize the engine’s impressive power output from off the line all the way up to the top end.

Chassis/Suspension

Race-Ready Ergonomics
- The body configuration allows more room for the racer to move around during the moto. To reduce fatigue, the seat is narrow in the front yet wide and padded in the rear.
Durable, Rigid Wheels
- The wheels have been designed with the inner lip rolled in to increase rigidity, allowing for a reduction in weight while maintaining strength.
Wide Track and Maxxis® Tires
- Wheels are set motocross-spec wide, near the allowable maximum of 50 inches, for great cornering speed. Maxxis® tires provide excellent handling and control. At 20 inches in the rear and 21 inches in the front, they provide better ground clearance than the competition.
Adjustable Handlebar
- With a large diameter, the tapered handlebar reduces vibration and is mounted on 4-way clamps for exceptional adjustability. The two sets of holes in the handlebar crown and the eccentric clamps allow the rider to choose the standard setting: 10mm forward, 20mm forward or 10mm backward.
Wide Foot Pegs
- The generous 2.6 inch-wide foot pegs are something riders will appreciate every time they want to get up on the pegs.
Advanced Frame
- The lightweight frame is a combination of aluminum and steel. The frame member under the engine is steel and is used for its strength and low profile so that the engine can sit lower overall for excellent mass centralization and unmatched handling. The aluminum frame is bolted together, rather than welded, for maximum durability.
Long A-Arm Suspension
- The front frame is as narrow as possible at the A-arm mounting points. This increases the A-arm length and reduces changes in camber as the suspension travels through its full range of motion.
High-Performance Shocks
- The front KYB® shocks are longer for increased stroke, superb bump absorption and excellent anti-bottoming characteristics. The Kashima™ coating offers smooth operation while the 9.8 inches of wheel travel means the racer is ready for the most challenging tracks.
Swingarm Rear Suspension
- The rear swingarm is crafted of strong, gravity-fed aluminum and is matched to a fully adjustable 46mm KYB® piggyback shock for excellent handling. For comfort even on tough terrain, the rear wheel offers 11.0 inches of travel.

Additional Features

Light Throttle Action
- The throttle lever requires low effort for less fatigue during long motos.
Compact LED Indicators
- The discreet panel on the fender in front of the rider gives vital indicators about low fuel, coolant temperature, check engine and neutral gear via an LED display.

engine

ENGINE

Liquid cooled, DOHC, 5-valve (titanium), single

Ignition

TCI: Transistor Controlled Ignition

Starting

Electric

FINAL DRIVE

O-ring chain

LUBRICATION

Dry sump

DISPLACEMENT

449cc

TRANSMISSION

5-speed; wet multiplate assist-and-slipper clutch

FUEL DELIVERY

Yamaha Fuel Injection (YFI), 42mm

BORE AND STROKE

95mm x 63.4mm

COMPRESSION RATIO

11.8: 1

chassis

TIRES (REAR)

AT20 x 10-9 Maxxis®

BRAKES (REAR)

Single wave-style 200 mm disc / twin piston caliper

TIRES (FRONT)

AT21 x 7-10 Maxxis®

BRAKES (FRONT)

Dual 161 mm discs / twin piston calipers

SUSPENSION (REAR)

Cast aluminum swingarm with piggyback shock; high/low speed compression, rebound and threaded preload adjustment, 280 mm (11.0") travel

SUSPENSION (FRONT)

Independent double wishbone with Kashima coated piggyback shocks; high/low speed compression, rebound and threaded preload adjustment, 249 mm (9.8") travel

critical data

WIDTH

1,240 mm (48.8")

HEIGHT

1,065 mm (41.9")

LENGTH

1,795 mm (70.7")

Warranty

6 months (unlimited mileage)

Colour(s)

Team Yamaha Blue

WHEELBASE

1,270 mm (50.0")

WET WEIGHT

184 kg (405 lb)

SEAT HEIGHT

810 mm (31.9")

FUEL CAPACITY

10 L

Maximum Ground Clearance

115 mm (4.5") rear sprocket protector / 235 mm (9.3") engine

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2025 Yamaha YFZ450R

CAPABILITY

COMFORT

CONFIDENCE

ENGINE

Chassis/Suspension

Additional Features

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