2017 Yamaha Motocross Model Line

Several updates to multiple Yamaha models

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www.yamaha-motor.com

Yamaha Motor Corporation, U.S.A., is pleased to introduce its championship-winning and bLU cRU-inspired 2017 Motocross model lineup, which includes the YZ250F and YZ450F four-stroke machines, along with the iconic YZ250, YZ125, and YZ85 two- stroke models.

2017 Yamaha YZ250F

Yamaha YZ250F

 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 quick- release 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 from the rear wheel.

 

2017 Yamaha YZ450F

2017 YZ450F

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.

2017 YZ250

2017 YZ250

 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.

2017 YZ125

2017 YZ125

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.

 

2017 Yz85

2017 YZ 85

ENGINE

-85cc liquid-cooled, crankcase reed-valve-inducted, two-stroke engine inhales through a 28mm Keihin® flat-slide carburetor; seamless throttle response across the powerband is the result.

-Involute spline set-up in clutch means smoother shifting under power with great durability at competition-level usage. A two-piece clutch cover provides easy access during maintenance.

-Lightweight radiator has large cores and louvers, and the water pump features a cast aluminum (vs. resin) impeller for maximum cooling efficiency.

-Lightweight exhaust system design helps create a broader powerband with stronger low-end punch.

-Airbox design ensures greater air cleaning performance and easier maintenance.

CHASSIS/SUSPENSION

-Rear subframe is removable to allow easy maintenance.

-Lightweight 36mm KYB® inverted cartridge fork features 10.8 inches of travel with compression and rebound damping adjustability, and low-friction outer tubes and internals.

-Rear suspension features fully adjustable Kayaba® link-type shock with 11.1 inches of travel and race-tested compression damping valving.

-220mm front disc and 190mm rear disc brakes with stainless steel rotors deliver strong, precise stopping power.

-Lightweight 17-inch front and 14-inch rear rims are durable and reduce unsprung weight for optimal suspension performance.

-Dunlop® knobbies provide great traction on a variety of tracks and terrain.

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