2018 Yamaha YZ250F

$7,699.00


Availability
Brochure
Year
2018
Manufacturer
Yamaha
Model
YZ250F

Overview

Description

CHAMPIONSHIP ‑ PROVEN!



The 2‑straight MX & SX West Champ and undisputed benchmark in 250 motocross bikes.

Engine
  • Engine Type: 250cc liquid-cooled DOHC 4-stroke; 4 titanium valves
  • Bore x Stroke: 77.0mm × 53.6mm
  • Compression Ratio: 13.5:1
  • Fuel Delivery: Keihin® fuel injection, 44mm
  • Ignition: TCI: Transistor Controlled Ignition
  • Transmission: Constant-mesh 5-speed; multiplate wet clutch
  • Final Drive: Chain
Chassis
  • Suspension / Front: KYB® Speed-Sensitive System inverted fork; fully adjustable, 12.2 in. travel
  • Suspension / Rear: KYB® single shock; fully adjustable, 12.4 in. travel
  • Brakes / Front: Hydraulic disc, 270mm
  • Brakes / Rear: Hydraulic disc, 245mm
  • Tires / Front: 80/100-21 Bridgestone® M403A
  • Tires / Rear: 100/90-19 Bridgestone® M404
Dimensions
  • L x W x H: 85.2 in. x 32.5 in. x 50.4 in.
  • Seat Height: 38.0 in.
  • Wheelbase: 58.1 in.
  • Rake (Caster Angle): 27.1 deg.
  • Trail: 4.6 in.
  • Ground Clearance: 12.8 in.
  • Fuel Capacity: 2.0 gal.
  • Wet Weight: 231 lb.
Other
  • Warranty: 30 Day (Limited Factory Warranty)
Top Features
  • Innovative Engine Design: A liquid-cooled, DOHC 4-valve, fuel-injected engine with forward-positioned downdraft intake delivers class leading engine power. This design allows for unmatched mass centralization, concentrating the motorcycle's key components—engine, fuel tank and exhaust system—toward the center of the motorcycle achieving light and nimble handling performance.
  • Durable Transmission: The transmission gears, dogs and shift mechanisms are designed to smooth gear changes and improve durability under the heavy demands of motocross racing.
  • Bilateral Beam Aluminum Frame: A Yamaha's renowned bilateral beam aluminum frame features compact overall dimensions that balance minimal weight with the strength and rigidity needed for race-winning performance. This frame features a forged section at the swingarm pivot and engine mounting brackets for tuned responsiveness, handling and unmatched lightweight feeling.
  • Refined Suspension Settings: Industry-leading, fully adjustable KYB® spring-type fork with speed sensitive damping features advanced valving for improved suspension feel and balance. The linkage type rear suspension features a KYB® rear shock also features settings optimized for ideal damping characteristics.
  • GYTR® Power Tuner Ready: Accessory GYTR Power Tuner lets owners adjust air/fuel mixture and ignition timing maps to match engine performance characteristics to the rider and track conditions in a matter of seconds with the push of a few buttons, as well as monitor engine diagnostic codes.
Engine Features
  • Innovative Engine Design: The liquid-cooled, DOHC 4-valve, fuel-injected engine features a forward-positioned straight downdraft intake with symmetrical intake and exhaust ports. A compact, high compression combustion chamber delivers outstanding engine character with a focus on top-end power delivery.
  • Piston, Rod and Crankshaft Balance: A flat-top forged piston features a bridge-box design for additional strength with minimal weight. The piston, rings and DLC-coated piston pin, along with the offset cylinder configuration, all reduce friction loss and contribute to quick response. The engine's intake ports, cam profiles, high-strength connecting rod and optimized crank and counterbalancer all work together to produce potent high-rpm power with user-friendly delivery and exceptional reliability.
  • Advanced ECU and Fuel Injection: The adjustable fuel injection system uses a 44mm throttle body fed by a high-pressure battery-less electric fuel pump. This ensures optimum fuel atomization and air/fuel calibration for excellent rideability in a wide range of riding conditions. The system controls the volume of fuel injected and the ignition timing based on engine rpm and throttle opening, providing hesitation-free response and controllability.
  • Wraparound Rear Positioned Exhaust Layout: An innovative exhaust pipe design improves mass centralization and power development characteristics. This layout moves the rear end of the exhaust pipe farther forward and enables a muffler position close to the center of the mass.
  • Durable Transmission: The transmission gears, dogs and shift mechanisms are designed to smooth gear changes and improve durability under the heavy demands of motocross racing.
  • GYTR Power Tuner Ready Accessory: GYTR Power Tuner lets owners adjust air/fuel mixture and ignition timing maps to match engine performance characteristics to the rider and track conditions in a matter of seconds with the push of a few buttons, as well as monitor engine diagnostic codes.
Additional Features
  • Embedded Graphics: Yamaha's unique embedded graphics are built into the bodywork for extended durability, resisting both peeling and damage.
  • Adjustable Handlebar Mounts: The 4-position adjustable handlebar mounts are rubber mounted to improve comfort and reduce handlebar vibration.
  • Race Winning Details: The YZ450F includes top-spec details, including 1-1/8" aluminum tapered handlebars, wide 55mm footpegs, a quick-adjust clutch perch, stylish black rims and gold chain.
  • Simplified Servicing: Sleek air cleaner cover helps prevent contact with the quick-release quarter-turn Dzus® air box fasteners and provides tool-less access to the air filter, positioned at the front of the bike to avoid roost from the rear wheel.
Chassis/Suspension Features
  • Bilateral Beam Aluminum Frame: A Yamaha's renowned bilateral beam aluminum frame features compact overall dimensions that balance minimal weight with the strength and rigidity needed for race-winning performance. The frame's swingarm pivot section and engine mounting brackets are tuned for stability, responsiveness and sharp cornering.
  • Mass-Centralization: The engine, aluminum muffler and fuel tank are positioned close to the machine's center of gravity. This layout contributes to centralized mass for a lightweight handling feeling on the track. The wide 55mm footpegs help lower the rider's center of gravity for improved machine balance, control and rider comfort.
  • 270mm Front Brake: A large 270mm front brake disc is the same system fitted to the YZ450F™, and uses an aggressive pad material for exceptional stopping power and braking control. Out back, a durable heat-resistant rear rotor boosts brake durability.
  • Refined Suspension Settings: Industry-leading, fully adjustable KYB® spring-type fork with speed sensitive damping features advanced valving for improved suspension feel and balance. The linkage type rear suspension features a KYB® rear shock also features settings optimized for ideal damping characteristics.
NOTES:
Wet weight includes the vehicle with all standard equipment and all fluids, including oil, coolant (as applicable) and a full tank of fuel. It does not include the weight of options or accessories. Wet weight is useful in making real-world comparisons with other models. The riders depicted on this website are professionals, and all of the action was shot on a closed course. At Yamaha, we want every ride to be safe and enjoyable. Always dress properly for your ride with a helmet, eye protection and protective clothing. Avoid excessive speeds and never engage in stunt riding. Never ride under the influence of alcohol or other drugs; it is illegal and dangerous. Always inspect your Yamaha before riding. Read the Owner's Manual and the product warning labels before operation. Yamaha and the Motorcycle Safety Foundation encourage you to ride safely and respect the environment. For safety and training information, see your dealer or call the MSF at 800.446.9227.

Specs

Engine

Engine Type
250cc liquid-cooled DOHC 4-stroke; 4 titanium valves
Displacement
250cc
Bore and Stroke
77.0mm × 53.6mm
Cooling
Liquid
Compression Ratio
13.5:1
Fuel System
Keihin® fuel injection, 44mm
Ignition
TCI: Transistor Controlled Ignition

Chassis

Front Suspension
KYB® Speed-Sensitive System inverted fork; fully adjustable, 12.2 in. travel
Front Brakes
Hydraulic disc, 270mm
Front Tire
80/100-21 Bridgestone® M403A
Rear Suspension
KYB® single shock; fully adjustable, 12.4 in. travel
Rear Brakes
Hydraulic disc, 245mm
Rear Tire
100/90-19 Bridgestone® M404

Dimensions

Dry Weight
Curb Weight: 231 lb.
Fuel Capacity
2.0 gal.
Wheelbase
58.1 in.
Ground Clearance
12.8 in.
Seat Height
38.0 in.
Trail
4.6 in.
Rake
27.1 deg.

Transmission

Transmission
Constant-mesh 5-speed; multiplate wet clutch
Final Drive
Chain

General

Colors
Team Yamaha Blue, White
Warranty
30 Day (Limited Factory Warranty)

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