Yamaha 2019 line up includes all-new YZ250F and YZ85
By Team TMX on 8th Jun 18
Yamaha has been building the most competitive cutting-edge motocross bikes for nearly half a century. Racing is an integral part of the companys DNA, and the will to win is at the very heart of the companys operations.
The 2019 YZ models offer the very latest technology and performance features designed to make enthusiasts and professional racers alike the best riders possible.
For 2019 the YZ450F receives a number of technical upgrades, while YZ250 and YZ125 models get all-new graphics. With the launch of the new YZ250F and YZ85 - not forgetting the recently launched YZ65 - Yamaha offers the most complete range of winning models that give racers of all ages the opportunity to be a part of one of the most successful brands in the history of motocross.
New YZ250F
The 2019 YZ250F boasts an all-new engine design that features an electric starter, a new cylinder head, piston, camshaft profile, cylinder geometry, larger diameter clutch and more - all working together to deliver top notch power, with even more mid-top power, this state of the art 250cc 4-stroke opens a new era in wireless connectivity and trackside tuneability with its Yamaha Power Tuner smartphone app.
For 2019, Yamaha has refined its distinct rearward-slanted cylinder design for the YZ250F engine. The liquid-cooled, DOHC 4-valve, fuel-injected engine features a forward-positioned straight downdraft intake with symmetrical intake and exhaust ports.
A new, higher-compression flat-top forged piston features a bridge-box design for additional strength with minimal weight.
The YZ250Fs lighter and more upright cylinder, newly designed intake ports, cam profiles, high-strength connecting rod and optimized crank and counterbalancer all work together to produce more potent mid-high-rpm power with user-friendly delivery and exceptional reliability.
2019 Yamaha YZ250f action
The transmission and clutch have been overhauled for a more direct connection as well as enhanced durability.
The radiators and exhaust have also been modified for improved performance and weight distribution.
Worlds first production 250cc class Power Tuner app
The 2019 YZ250F is the worlds first production 250cc motocross bike with a wireless smartphone-based engine tuner. Using Yamahas exclusive Power Tuner app, its easy to choose the exact power profile for optimum race results at every track.
By connecting wirelessly with the YZ250Fs inbuilt Communication Control Unit (CCU), riders and technicians can instantly and easily adjust air/fuel mixture and ignition timing maps to tune engine performance for various track conditions, record race log information, and monitor a range of data.
Two-mode adjustable engine mapping allows the rider to adjust engine character with the push of a button
The 2019 YZ250F also brings the convenience of push-button starting for quick and effortless restarts under pressure and relaxed riding when the clock isnt ticking.
The 2019 YZ250Fs compact frame is completely new to further refine the instinctive handling that makes this Yamaha one of the best handling machines in the class. Simply, the new frame was designed to improve contact to the ground and provide the best possible balance of stiffness for bump absorption, and effortless cornering.
The seat height has been reduced by 8mm towards the front and almost 20mm lower at the tail end, giving the rider better manoeuvrability on the bike.
The industry-leading, fully adjustable KYB coil spring-type forks with speed sensitive damping receive updated settings. The KYB shock boasts new damping characteristics to match the new chassis as well as a new, lighter weight spring.
New YZ85
Powered by a liquid-cooled 2-stroke engine, this sharp looking all-new race bike delivers more performance and more control for young riders.
The 2019 YZ85 utilizes a newly designed 85cc liquid-cooled, 2-stroke engine featuring a case reed-valve intake and a mechanical Yamaha Power Valve System (YPVS).
Combined with redesigned cylinder and head, crankcase, crankshaft, connecting rod, transmission, exhaust and CDI unit, this new YZ engine provides broad tractable power across the rev range without losing peak power at high RPM.
2019 Yamaha YZ85
The semi-double-cradle steel frame, removable subframe and redesigned aluminium swing-arm provide a nimble feel, confident handling and ease of maintenance.
The ergonomics feature a flat, comfortable seat, four-position adjustable aluminium tapered handlebars and adjustable reach levers to provide comfort and ease of movement for a wide range of young rider sizes.
For 2019, a new, stiffer front brake line with new routing improves braking feel, while wave-style brake discs offer improved self-cleaning and cooler-running performance. The 220mm front disc and 190mm rear disc deliver strong, precise stopping power.
YZ450F
Following its major redesign for 2018, the flagship YZ450F receives a number of detail technical improvements for 2019.
The most significant change has been made to the front end, where the forks are equipped with larger front axle brackets featuring new shape wheel collars that ensure a higher level of front-end rigidity.
This increased front end rigidity improves the YZ450Fs overall handling performance by giving more accurate surface feedback and enabling the rider to better assess the level of front wheel traction, giving greater feel and improved control.
Price and availability
The 2019 Yamaha YZF and YZ models will be available at Yamaha dealers starting end of June.
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