Innovative Engine Design: A liquid-cooled, DOHC 4-valve, fuel-injected engine with forward-positioned downdraft intake delivers class leading engine power, updated for 2017 to further improve top-end power. This engine 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.Updated Transmission: 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.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 new forged section at the swingarm pivot, and engine mounting brackets for tuned responsiveness, handling and unmatched lightweight feeling.
Top FeaturesModern Styling: Modern, aggressive styling, including front fender, front number plate, radiator shrouds, side number plates, air box, rear fender, fork guards, as well as the rear brake disc protector, rear brake caliper protector and wider foot pegs—just like the 4-strokes.Lightweight Frame: A light aluminum frame housing a patented YPVS-equipped ripper of an engine results in an awesome power-to-weight ratio.Rider-Friendly Chassis: Ultra light weight means nimble handling with less fatigue.New 270mm Front Brake: Larger 270mm front disc brake coupled with new pad material offers outstanding machine control and performance, with exceptional stopping power and controllability.
Modern Styling: Aggressive, modern styling includes the front fender, number plate, radiator shroud and side number plates.Adjustable Controls: Clutch lever reach adjuster to accommodate smaller hands for younger riders.Compact Two-Stroke Powerplant: Liquid-cooled, 85cc crankcase reed-valve-inducted six-speed is light, compact and designed to deliver hard-hitting, moto-winning power throughout the rpm range.Close-Ratio Transmission: Smooth-shifting, six-speed close-ratio transmission with heavy duty multiplate clutch delivers maximum hookup for outstanding acceleration and corner-exiting power.Strong, Compact Frame: Ultra-rigid, single-backbone, semi-double-cradle frame is lightweight and strong for sharp handling.Race-Ready Suspension: Fully adjustable suspension allows a broad adjustment range to suit everybody from rank novice to mini expert.
Modern Styling: Modern, aggressive styling, including front fender, front number plate, radiator shrouds, side number plates, air box, rear fender, fork guards, as well as the rear brake disc protector, rear brake caliper protector and wider foot pegs—just like the 4-strokes.Lightweight Frame: A light aluminum frame housing a patented YPVS-equipped ripper of an engine results in an awesome power-to-weight ratio.Race-Ready Features: The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs and gripper seat.Ideal Balance: A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class.Rider-Friendly Chassis: Ultra light weight means nimble handling with less fatigue.New 270mm Front Brake: Larger 270mm front disc brake coupled with new pad material offers outstanding machine control and performance, with exceptional stopping power and controllability.
Innovative Engine Design: The revolutionary rearward-slanted-cylinder design of the YZ450F allows for a straight down-draft intake with a symmetrical port layout for smooth controllable power delivery throughout the RPM range. This engine design also achieves unmatched mass centralization, for light and nimble handling.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.Launch Control System (LCS): LCS optimizes engine output for quicker, smoother race starts every time, boosting controllability out of the gate.
YZ250FX is a light, powerful machine built to win cross country races.Top FeaturesInnovative Hare Scramble/GNCC® Engine Design: Based on the championship-winning YZ250F, featuring Yamaha's revolutionary rearward slanted, liquid-cooled, DOHC 4-stroke power plant with forward-positioned straight downdraft symmetrical intake, and with an added sixth gear and wide ratio transmission, the YZ250FX is an "out-of-the-box" Hare Scrambles/GNCC® competition machine.
Designed for closed course X-Country and enduro-type racing the YZ450FX combines light, nimble handling with the power of a 450.Top FeaturesInnovative Hare Scramble/GNCC® Engine Design: The YZ450FX shares the revolutionary rearward-slanted-cylinder design of the YZ450F that allows for a straight downdraft intake with a symmetrical port layout. In the YZ450FX, this engine delivers a controllable, torquey power character with strong top-end power tuned specifically for cross-country racing.
YZ250X is ultimate, 2-stroke off-road racing machine built to win x-country races.Top FeaturesStunning Two-Stroke Power, Tuned for Cross-Country and Hare Scrambles Racing: The YZ250X is optimized for the unique demands of Hare Scrambles and GNCC® racing. The YPVS-equipped 249cc two-stroke engine is combined with a wide-ratio five-speed transmission for the ultimate cross-country power plant.
