NEW FOR 2027
All-New 250cc Four-Stroke Engine
An all-new 250cc four-stroke engine increases power across the entire rpm range while reducing overall noise for FIM/AMA compliance.
Redesigned Rear Braking System
An all-new rear braking system provides linear stopping power with improved braking force and controllability in a smaller, lighter package.
Smooth-operating Hydraulic Clutch
A new hydraulic clutch adopted from the YZ450F, along with a clutch hose specific to the YZ250F, contributes to its light, responsive operation.
Two-Piece Side Covers
New two-piece side covers offer easier maintenance while providing striking two-tone YZ styling.
YZ450F-Derived Compact Frame
The 2027 YZ250F adopts the YZ450F's compact frame design for improved handling and cornering performance.
ENGINE
Adjustable Launch Control
An adjustable Launch Control System controlled through the Power Tuner App optimizes launches when the gate drops.
All-New High-Revving 250cc Engine
The YZ250F's all-new 250cc four-stroke engine increases power and torque across the entire rpm range, boasting a higher redline for more aggressive performance.
Double-Spring Intake Valves
New intake valve springs feature the first double-spring design on a YZ Series model, improving stability to balance the higher-revving engine.
Dry Sump Lubrication System
A new dry sump lubrication system provides stable oil circulation, improving the durability and reliability for the higher engine output.
ECU Anti-Theft Lock
An ECU lock function through the Power Tuner App helps prevent theft and unauthorized engine start-up.
Increased-Airflow Intake Port
A newly optimized intake port shape increases airflow, while compression ratios have been raised accordingly.
Noise Compliant Design
The intake and exhaust design is now noise compliant with FIM/AMA regulations at a comfortable noise level.
Optimized Engine Brackets
New engine brackets for the new engine and frame optimize rigidity for a more manageable character with predictable responsiveness.
Smooth-operating Hydraulic Clutch
The new YZ250F adopts the YZ450F's hydraulic clutch, along with a clutch hose specific to the YZ250F, with an increased clutch spring load for smooth feathering and engagement.
Three-Level Traction Control
A three-level Traction Control System selectable within the Yamaha Power Tuner App maintains ideal rear wheel traction.
YZF-R1-Inspired Rocker Arms
New rocker arms inspired by Yamaha's supersport YZF-R1 combined with new finger-follower intake valves increase the rev limit by 700 rpm.
CHASSIS/SUSPENSION
Bolt-Fastened Brake Pedal
The rear brake pedals have replaced rivets with bolts for easier replacement and maintenance.
Class-Leading KYB Suspension
New front and rear KYB suspension, including a new rear shock with a new base valve, piston and tool-less low speed compression adjuster, offers increased damping force, shock absorption and comfort that enhances overall traction.
Improved Brake Disc Mounting
A new brake disc mounting design to both the front and rear discs improves braking reliability.
Lightweight All-New Rear Brake
An all-new rear brake system has been revised to create a linear buildup of stopping power while providing significant weight savings.
Precise Rear Brake Master Cylinder
A new smaller and lighter rear brake master cylinder and caliper provides optimized braking force and controllability.
Rigid, Easy-Grip Rear Fender
A new rear fender provides ample rigidity and provides a secure place to grip the YZ250F when picking it up.
Two-Tone Two-Piece Side Covers
New two-piece, two-tone side covers highlight the YZ series design, while standardized bolt heads offer easier installation and removal.
YZ450F-Derived Compact Frame
The 2027 YZ250F has adopted the YZ450F frame design, improving handling and cornering performance, along with a reassuring front-end feel.
ADDITIONAL FEATURES
Graphics Package
The YZ250F adopts the same graphics as the flagship YZ450F, emphasizing the YZ Series lineage with bright colors and aggressive styling.
Honeycomb Seat
A new honeycomb-pattern seat material from the YZ450F makes it easy for the rider to slide forward while holding them from sliding rearward.
