YAMAHA’S 2018 OFF-ROAD BIKES
Yamaha is still committed to off-road riding with five different full-size models, including three closed-course competition bikes and two EPA compliant off-road machines.
2018 YAMAHA YZ450FX
1. Innovative 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.
2. Bilateral Beam Aluminum Frame
A nearly identical bilateral beam frame that is found on the
championship winning YZ450F is used on the YZ450FX. It places
the engine, fuel tank and exhaust close to the center mass of the bike
for extremely light and nimble handling character.
3. Advanced Fuel Injection
The YZ450F-based Keihin® 44mm throttle body fuel injection system
is tuned for cross-country racing and ensures smooth throttle
response and easy starting in nearly all conditions.
4. Cross Country- Specific Suspension
Industry-leading, YZ450F-derived KYB® spring-type forks with speed
sensitive damping and a linkage-type, KYB® rear shock both feature
fully adjustable settings designed specifically for cross country racing.
5. Cross Country Podium Ready
With a two gallon fuel tank, sealed O-ring chain, and an 18-inch rear
wheel with XC racing tires, the YZ450FX is ready to win right out of
6. Electric Starter System
The YZ450FX features an electric starter to help reduce rider fatigue
along with a main switch-free electrical system for easier starting off.
2018 YAMAHA YZ250FX
1. Innovative 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®
2. High- Spec Engine
The engine is based on the 2017 YZ250F, and includes all the same
race-winning features: an updated cylinder head, lightweight forged,
two-ring, flat-top piston; a shorter, more durable piston pin with
diamond like carbon (DLC) coating; a revised piston oil jet, and
advanced connecting rod, crankshaft, and counterbalancer designs.
Together, the result is improved peak power, power delivery and overall
3. 6- Speed Transmission
A wide-ratio 6-speed transmission is used to insure the right gear is
available for the wide variety of terrain found in cross-country racing.
4. Tuned Chassis
Nearly the same bilateral beam frame that is found on the
championship winning YZ250F is used on the YZ250FX. The forged
section at the swingarm pivot and engine mounting brackets help
develop nimble lightweight feeling in the tight technical terrain while
still providing stability in fast sections.
5. Advanced Suspension
Industry-leading, fully adjustable KYB® spring-type fork with speed
sensitive damping features revised valving for improved suspension
feel and balance. The linkage type rear suspension features a KYB rear
shock with settings optimized for cross country racing.
6. Cross Country Features
With the electric starting system, a 2-gallon fuel tank, rugged plastic
skid plate, 18-inch rear wheel and XC racing tires, the YZ250FX is
ready to win right out of the box.
2018 YAMAHA WR450F
1. Innovative YZ450F- Based Engine Design
With a revolutionary rearward slanted, liquid- cooled, DOHC 4-stroke
powerplant with four titanium valves based on the YZ450F™, a wide
ratio five-speed transmission and WR- specific modifications—the
WR450F™ is an “out-of-the-box” enduro machine. (California Green
Sticker compliant with a forestry service-approved spark arrestor.)
2. Electric Starter System
Main switch-free electrical system provides push-button electric
starting convenience. Just push the starter button and go—no need
to power on a main switch or insert a key.
3. Bilateral Beam Aluminum Frame
The WR450F features a YZ-bred aluminum bilateral beam frame—
engineered from castings, forgings and extrusions—with engine
mounts optimized for chassis rigidity characteristics needed in enduro
4. Industry Leading KYB® Suspension
Industry leading, fully adjustable YZ450F-based KYB® spring-type
forks with speed-sensitive damping and KYB® shock delivers precise,
best-in-class, fade-free handling.
5. Enduro-Ready WR450F Features
WR450F-specific details include a wide-ratio five-speed transmission,
temperature regulating radiator fan, an optimized clutch, sealed O-ring
chain, enduro-specific tires with an 18-inch rear wheel, skid plate, and
a standard side-stand. A bright headlight, LED taillight and a
complete LCD enduro race computer are ready for long race days.
6. 270mm Front Brake
270mm front disc brake offers outstanding machine control and
performance, with exceptional stopping power and controllability
2018 YAMAHA WR250F
1. Competition Ready
Revolutionary rearward slanted, liquid-cooled, DOHC 4-stroke power
plant with 4 titanium valves based on the YZ250F™, with an added
sixth gear and wide ratio transmission, among other modifications,
make it perfect for Enduro competition.
2. Nimble Chassis
The same bilateral beam frame that is found on the championship
winning YZ250F is used on the WR250F™. It places the engine and
fuel tank close to the center mass of the bike for extremely light and
nimble handling character.
3. Fuel Injection
A Keihin® 44mm throttle body fuel injection system is tuned for
Enduro riding ensures smooth throttle response and easy starting in
nearly all conditions. Plus the electric start button reduces rider
4. Advanced Suspension
Industry leading fully-adjustable KYB® spring-type forks with speed
sensitive damping and a KYB® rear shock, each tuned with Endurospecific
5. Enduro- Specific Features
With a 2 gallon fuel tank, multi-function Enduro computer, 18-inch
rear wheel, O-ring chain, skid plate and Enduro spec tires, the
WR250F is ready to win right out of the box.
2018 YAMAHA YZ250X TWO-STROKE
1. Stunning 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.
2. Motocross-Derived Aluminum Frame
Ultra-lightweight YZ250-spec frame features carefully engineered
combination of aluminum castings, forgings and extrusions for the
perfect balance of rigidity and flex, with industry-leading fully
adjustable, KYB® speed sensitive spring-type suspension tested and
tuned specifically for the needs of cross-country racers.
3. Racing Style and Ergonomics
The YZ250X carries the racing heritage of the YZ250 motocrosser with
aggressive styling from front fender to the rear brake protector, and is
ready to race out of the crate, complete with an aluminum tapered
handlebar, YZ-F-style foot pegs, gripper seat, and off-road specific
4. GNCC- Specific features
18-inch rear wheel, sealed O-ring chain, wide ratio transmission,
narrow expansion chamber, off-road focused tires and suspension
settings, a standard side stand and fuel tank petcock with reserve
5. 270mm Front Brake
Large 270mm front disc brake coupled with high-performance pad
material offers outstanding machine control and performance, with
exceptional stopping power and controllability.