2017 Yamaha YZ250F

$7,399.00 - Stock Number: Y02056

4 Champions. 7 Shootouts. Zero Competition

Reigning 2-straight MX and SX West Champion and winner of every major 250 shootout! More refined for 2017. The best just got even better.


Bore x Stroke 77.0mm x 53.6mm
Compression Ratio 13.5:1
Engine 250cc liquid-cooled DOHC 4-stroke; 4 titanium valves
Fuel Capacity 2.0 gal
Fuel Delivery Keihin® fuel injection, 44mm
Brake Front Hydraulic disc, 270mm
Brake Rear Hydraulic disc, 245mm
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
Tires Front 80/100-21 Bridgestone® M403A
Tires Rear 100/90-19 Bridgestone® M404
Ground Clearance 12.8 in
LxWxH 85.2 in x 32.5 in x 50.4 in
Rake (Caster Angle) 27.1°
Seat Height 38.0 in
Trail 4.6 in
Wet Weight 231 lb
Wheelbase 58.1 in
Final Drive Chain
Ignition TCI: Transistor Controlled Ignition
Transmission Constant-mesh 5-speed; multiplate wet clutch
General Information
Warranty 30 Day (Limited Factory Warranty)



  • 270mm Front Brake - A new 270mm front brake disc is the same system fitted to the 2016 YZ450F and is a huge 20mm larger than the disc fitted to the 2015 model, using an all-new pad material for exceptional stopping power and braking control.
  • 270mm Front Brake - Beefy 270mm front disc brake coupled with new pad material offers outstanding braking power and performance, with exceptional controllability.
  • Advanced 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.
  • Advanced Fuel Injection - The four-titanium-valve cylinder head is matched to a battery-less fuel injection system that provides optimized power at any rpm. The fuel injection system instantly adjusts the air/fuel mixtures depending on altitude and temperature, for a hesitation-free engine that delivers no matter the conditions.
  • Bilateral Beam Aluminum Frame - The aluminum Bilateral Beam frame offers a superb rigidity balance and provides unmatched lightweight handling, with updated suspension settings for smoother damping feel.
  • Brakes - New 270mm front disc brake, up from 250mm, uses new brake pad material for exceptional stopping power and control for aggressive corner entries.
  • Compact Engine Layout - The compact wet sump lubrication system with new piston cooler spray jet maintains excellent engine durability and eliminates the need for an oil tank, which lowers engine weight. This creates a more compact engine that contributes to mass centralization and unmatched handling.
  • Compact Fuel Tank and Air Box - The Yamaha-exclusive fuel tank and air cleaner box layout positions the fuel tank mass closer to the center of the bike which improves handling feel. Furthermore, the air box is positioned in front, away from the dirt kicked up from the rear wheel and can be accessed without tools for easy serviceability of the air cleaner.
  • Crank - Optimized crankshaft and counterbalancer designs feature a revised balance ratio, predictive power delivery and reduced vibration.
  • ECU - New ECU settings provide smoother transition as the rider reaches the rev limiter.
  • Embedded Graphics - Yamaha’s unique embedded graphics are built into the bodywork for extended durability, resisting both peeling and damage.
  • 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.
  • Innovative Engine Design - A liquid-cooled, DOHC 4-valve, fuel-injected engine with the same forward-positioned straight intake, rear-inclined cylinder and rear positioned exhaust layout as the YZ450F. The engine, with its straight and symmetrical intake and exhaust ports and compact, high compression combustion chamber, delivers outstanding engine character in the high speed range.
  • Innovative Engine, Updated for More Top-End Power - Liquid-cooled, DOHC 4-valve, fuel-injected engine with the same forward-positioned, straight intake, rear-inclined cylinder and rear positioned exhaust layout as the YZ450F – now with further optimized crank balance and even more advanced piston technology between the cases.
  • Mass-Centralized Ergonomics - The layout of the seat, fuel tank, air box, and wrap-around exhaust system moves the bike’s mass towards the center for exceptional handling. The front intake layout with large air filter element adds the benefit of reduced air filter maintenance due to its positioning away from dirt roost from the rear wheel.
  • Mass-Centralized Exhaust System - The aluminum muffler is positioned closer to the machine’s center of gravity as it is almost completely hidden by the side number plate. The layout contributes to centralized mass for a lightweight handling feeling.
  • New Cylinder Head and Intake System <br> The compact four-valve cylinder head features revised intake geometry for additional downdraft effect, matched to shorter intake funnel in the airbox, for improved top-end power. Inside the head, more aggressive camshaft profiles and valve springs boost output further, while larger valve seats ensure excellent sealing and reliability.
  • Oil Jets - Revised piston oil jets direct oil underneath the new piston, to help promote cooling and contribute to more stable engine performance.
  • Piston - A new lightweight forged two-ring piston uses a flat piston crown surface with additional strengthening ribs and a shorter, more durable piston pin with diamond like carbon (DLC) coating. The new piston is lighter, significantly stronger and together with revised EFI mapping, improves combustion performance for a faster, more thorough burn, resulting in excellent pulling power.
  • Piston, Rod and Crankshaft Balance - The all-new, flat-top designed forged piston now features a bridge-box design for additional strength, yet is even lighter for 2016. The piston, rings and new DLC-coated piston pin, along with the offset cylinder configuration, all reduce friction loss and contribute to quick response, while the updated oil cooling jet ensures high rpm reliability. As before, the YZ250F’s intake/exhaust ports, cam profiles, ECU, carburized crank and newly optimized balance ratios for the crank and balancer all work together to create the YZ250F’s outstanding engine character with more power in the high-rpm range.
  • Race-Ready Construction - The large diameter 22mm front axle and beefy top triple clamp provide rigidity for unmatched handling and front-end feel. The four-position adjustable handlebar mounts are rubber mounted to improve comfort and reduce handlebar vibration.
  • Simplified Servicing<br> Redesigned 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.
  • Stronger Connecting Rod and Crankcase<br> The entire die-cast crankcase features a new heat treating process to increase strength. Inside, a new nickel-chromoly steel connecting rod offers additional durability to handle the increased power output.
  • Updated Clutch - The clutch and shift mechanisms are updated for 2016 to reduce drive-force loss during gear changes and produce smoother shift action under the heavy demands of motocross racing.
  • Updated Frame and Suspension<br> Revised engine mounts and a reshaped swingarm pivot section of the aluminum frame improve lateral rigidity, while 5mm lower footpegs help lower the rider’s center of gravity for improved machine balance and control, revised suspension settings front and rear to match the chassis updates.
  • Updated Shifter - Revisions to the clutch boss and shift stopper arm provide smooth clutch engagement feel and more precise shifting action when the gate drops.
  • Updated Suspension - New suspension settings front and rear are designed to eliminate sudden jolts and better control front-end dive, for a smoother, more balanced damping feel through the corner.
  • Updated Suspension Settings - Industry-leading, fully adjustable KYB® spring-type fork with speed sensitive damping features revised valving for improved suspension feel and balance in each section of a corner, from entrance to exit. The KYB® rear shock also features settings optimized for ideal damping characteristics.
  • Updated Transmission<br> New gear dogs, revised gear tooth designs and a host of smaller changes create a smoother overall transmission with improved shifting, as well as a stronger overall powertrain for improved durability.
  • Wraparound Rear Positioned Exhaust Layout - As with the YZ450F, an innovative exhaust pipe design is adopted to improve 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, while a new muffler bracket reduces weight.
  • Wraparound Rear Positioned Exhaust Layout - The exhaust pipe has an innovative layout, circling the cylinder, giving the exhaust pipe proper length for an excellent exhaust pulse effect. At the same time, the exhaust pipe has three different diameters throughout the exhaust tract, bringing out excellent power characteristics. This layout allows the silencer to be moved forward, behind the side panel, making it closer to the middle of the bike for centralized mass for superior handling.

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2017 Yamaha YZ250F