Editorial

2017 YAMAHA YZ, YZ-F, YZ-FX, AND WR’S ANNOUNCED

"MC YZ250F USA CAN 2017"

For 2017, there is nothing earth shattering coming from Big Blue, just some minor and medium sized changes, primarily focused on the 250 four-strokes. The YZ250F and YZ250FX see a new cylinder head and intake system, transmission changes, some minor chassis changes, and suspension valving changes to match. The YZ450 only gets four minor changes: a new air box cover, new rear brake disk material, new Dunlop MX3S tires, and new graphics. The WR250 and 450 are the same as last year’s models except for black rims and the new air filter cover. The two-stroke motocross models are still available and the YZ125 and YZ250 both get 270mm front brake rotors (up from 250mm).

Here are all the changes to each model coming straight from Yamaha. For full specs and features go to yamaha-motor.com

MOTOCROSS

YZ250F

YZ250F

The 2017 YZ250F has changes to both the engine and the chassis.

NEW FOR 2017:
New Cylinder Head and Intake System
The compact four-valve cylinder head features revised intake geometry for additional downdraft effect, matched to shorter intake funnel in the airbox, for improved top-end power. Inside the head, more aggressive camshaft profiles and valve springs boost output further, while larger valve seats ensure excellent sealing and reliability.

Stronger Connecting Rod and Crankcase
The entire die-cast crankcase features a new heat treating process to increase strength. Inside, a new nickel-chromoly steel connecting rod offers additional durability to handle the increased power output.

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.

Updated Frame and Suspension
Revised engine mounts and a reshaped swingarm pivot section of the aluminum frame improve lateral rigidity, while 5mm lower footpegs help lower the rider’s center of gravity for improved machine balance and control, revised suspension settings front and rear to match the chassis updates.

Simplified Servicing
Redesigned air cleaner cover helps prevent contact with the quickrelease quarter-turn Dzus® air box fasteners and provides tool-less access to the air filter, positioned at the front of the bike to avoid roost.

YZ450F

YZ450F

Big blue’s big bike saw small changes for 2017.

NEW FOR 2017:
Simplified Servicing
Redesigned air cleaner over helps prevent contact with the quick-release quarter-turn Dzus® air box fasteners, providing tool-less access to the air filter that’s positioned at the front of the bike avoiding roost from the rear wheel.

New Rear Brake Rotor
Updated rear brake rotor material that has better heat resistance providing better durability and braking feel.

New Dunlop® MX3S® tires
For 2017, the YZ450F features soft-to-intermediate terrain tires, the Dunlop® MX3S®.

New Graphics
Stylish new graphics treatment brings the YZ450F even closer to that pure factory racer look, that are molded directly into the plastic, for extended durability, resisting both peeling and damage.

YZ250/125

YZ250

Courtesy Of Yamaha

The only update to the two-strokes is a larger front brake rotor.

NEW FOR 2017:
New Front Brake
New 270mm front disc brake (up from 250mm) also features a new brake pad material for exceptional stopping power and control for aggressive corner entries.

CROSS COUNTRY

YZ250FX

YZ250FX

The YZ250FX received all of the changes that they YZ250F got, plus a few more, like the kickstarter being removed to save weight.

NEW FOR 2017:
New Cylinder Head and Intake System
The compact four-valve cylinder head features revised intake geometry for additional downdraft effect, matched to shorter intake funnel in the airbox, for improved top-end power. Inside the head, more aggressive camshaft profiles and valve springs boost output further, while larger valve seats ensure excellent sealing and reliability.

New Piston
A new lightweight forged two-ring piston uses a flat piston crown surface with additional strengthening ribs and a shorter, more durable piston pin with diamond like carbon (DLC) coating. The new piston is lighter, significantly stronger and together with revised EFI mapping, improves combustion performance for a faster, more thorough burn, resulting in excellent pulling power.

New Crank and Connecting Rod
Optimized crankshaft and counterbalancer designs feature a revised balance ratio, predictive power delivery and reduced vibration. A new nickel-chromoly steel connecting rod offers additional durability to handle the increased power output.

Stronger Crankcase
The crankcase features a new heat treating process to increase strength, for protection, the frame welcomes the addition of a rugged plastic skid plate.

New 270mm Front Brake
270mm front disc (up from 250mm) brake coupled with new pad material offers outstanding braking power and performance.

Revised Suspension Systems
Both front and rear dampers feature optimized settings for 2017 to further boost overall suspension performance, while the front fork utilizes a stronger oil seal system for enhanced durability in the toughest conditions.

Updated Indicators
Thanks to a new WR®-style fuel level sensor in the tank, the 2017 YZ250FX includes a convenient fuel level and engine warning indicator on the handlebar.

YZ450FX

YZ450FX

The YZ450FX sees minor changes for 2017, one being the kickstarter being removed to save weight.

NEW FOR 2017:
Revised Suspension Systems
Both front and rear dampers feature optimized settings for 2017 to further boost overall suspension performance, while the front fork utilizes a stronger oil seal system for enhanced durability in the toughest conditions.

Simplified Servicing
Redesigned air cleaner cover provides tool-less access to the air filter, positioned at the front of the bike to avoid roost from the rear wheel.

Updated Indicators
Thanks to a new WR-style fuel level sensor in the tank, the 2017 YZ450FX includes convenient fuel level and engine warning indicators on the handlebar.

Style New black rims.

YZ250X

YZ250X

Just a larger front brake rotor for the 2017 YZ250X

NEW FOR 2017:
New Front Brake
New 270mm front disc brake (up from 250mm) also features a new brake pad material for exceptional stopping power and control for aggressive corner entries.

Style
Black rims.

ENDURO

WR250

WR250F

Small changes for the WR250F.

NEW FOR 2017:
New Front Brake
New 270mm front disc brake (up from 250mm) also features a new brake pad material for exceptional stopping power and control for aggressive corner entries.

Style
Black Rims and new air filter cover.

WR450

WR450F

Small changes for the WR450F.

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