Yamaha Motor Corporation USA announced the all-new 2027 YZ250F with an all-new engine and chassis designed to make the middleweight even better. The YZ250F has earned more shootout wins in top MX publications than its competitors and helped propel West and East Supercross champions Haiden Deegan and Cole Davies to their 250cc title sweep this season. The YZ250F dominated the Supercross season, winning 16 of 17 Main Events.
“The 2027 YZ250F receives a completely redesigned engine and extensive chassis changes to provide the highest level of performance for winning races,” said Derek Brooks, Yamaha Motorsports motorcycle product line manager. “The balance of increased power and improved handling characteristics have pushed the bike to a new level of performance from weekend track riding to competitive racing at the highest level.”
Engine, Noise Compliance
An all-new engine is designed for high-revving performance with a linear response and more power and torque through the rpm range, increasing the rev limit by 700 rpm from the previous model. This was achieved through the adoption of a rocker arm with finger follower system derived from Yamaha’s SuperSport YZF-R1, and intake refinements that allow for increased airflow and higher revs.
Despite the increase in power, revisions to the air cleaner box and exhaust systems help make the 2027 YZ250F noise-compliant, meeting FIM/AMA regulations with a tuned exhaust note that is more pleasing and comfortable to the rider.
Hydraulic Clutch, Transmission, Frame
Transferring power to the rear wheel, an all-new hydraulic clutch replaces coil springs with a new disc spring and integrates the primary gear and basket into a single steel unit. The result is a more compact, lightweight and durable assembly with smoother, more consistent engagement that requires less effort while eliminating the need for on-track adjustments.
The 2027 YZ250F adopts the same aluminum bilateral beam frame as the YZ450F, delivering a balance of rigidity and flex characteristics. The new inner and outer structure, including a thinner front downtube, provide improved stability, better cornering performance and a precise, confidence-inspiring front-end feel.
New engine brackets are designed for optimized rigidity, improving comfort and straight-line stability with a more manageable character and a predictable response. These chassis updates increase usability from slow, tight corners to high-speed sweepers and rough, rutty corner entries and exits, making the motorcycle easier to tip in and hold a line with a higher level of overall handling performance.
Suspension, Brakes
A new high-performance KYB rear shock and revised fork setting tuned specifically for the YZ250F complement the new frame. The suspension provides enhanced damping force with less bump reaction and pitching movement. The updated shock also has a new hand-operated low-speed compression clicker for simplified trackside adjustments.
The rear braking system has undergone a significant overhaul, resulting in a lightweight, compact design that delivers improved control with a linear buildup of stopping power. The rear brake caliper piston, master cylinder piston and rear brake disc were all reduced in size, with additional revisions to the brake line material and disc rotor bolts to reduce unsprung weight. Even with reduced size and weight, the system retains progressive and strong stopping characteristics. The rear brake pedal tip now uses bolt-type fasteners instead of rivets for simplified maintenance.
Styling, Yamaha Power Tuner App
Styling cues are matched with the flagship YZ450F and now include a slimmer, more compact front number plate, new two-piece side covers, a sharper rear fender and new YZ graphics. The honeycomb-pattern seat cover material enhances rider movement in various track conditions.
The Yamaha Power Tuner app retains full functionality and adds an ECU lock function for theft deterrence, allowing owners to prevent unauthorized engine start-up via a password-required lock accessed through the app.
2027 YZ250F Features, Benefits
- More powerful 250cc four-stroke engine with a revised, more linear power delivery for added control and rideability across the entire powerband
- A revised and tuned intake and exhaust meets the latest FIM/AMA noise compliant regulations
- New hydraulic clutch offers lighter lever feel, smoother feathering and a consistent mesh point
- Advanced fuel injection via a 44-millimeter Mikuni throttle body ensures optimum fuel atomization and power for a wide range of riding conditions
- Five-speed transmission with tri-shaft layout vertically stacks transmission shafts for a lighter, more compact configuration
- Yamaha’s Power Tuner app includes intuitive “Quick Setting” slide bar giving the rider direct access to engine tuning, revised traction and launch control settings, and an ECU-lock function
- New frame design balances rigidity and flex characteristics for a calmer front-end feel and enhanced stability
- Compact body includes seamless, rounded features that ease rider movement for enhanced control
- High-spec fully adjustable Speed Sensitive System KYB coil spring-type fork provides exceptional feel and bump absorption
- New high-performance KYB rear shock enhances low-speed damping and smooths the damping transition between low and high speeds for enhanced control in a variety of conditions
- New compact and lightweight rear braking system improves controllability with a linear buildup of stopping power
- Updated styling includes a slimmer, more compact front number plate, new two-piece side covers, sharper rear fender and new YZ graphics
- Honeycomb-pattern seat cover material maintains ease in rider sliding forward while improving hold from sliding rearward during acceleration
- Compact, lightweight push-button electric start provides effortless engine starts
The new 2027 YZ250F will be available from dealers this September in Team Yamaha Blue for $9,099 MSRP, and a Monster Energy Edition will also be available from dealers this September for $9,299 MSRP.
Yamaha BLU CRU Off-Road Racing Contingency Program
All 2027 YZ models are eligible for Yamaha’s current BLU CRU Off-Road Racing Contingency Program, which features over $10 million for Yamaha BLU CRU riders competing in off-road motorcycle racing. YZ riders can earn contingency payouts via a BLU CRU debit card, receive a BLU CRU welcome kit and exclusive invitations to special BLU CRU events and training opportunities.
For complete details on how to register for the BLU CRU Off-Road Racing Contingency Program, along with specific information on which racing series, events and classes are included, visit the Off-Road Racing Contingency page on the Yamaha Motorsports website.
