YAMAHA 2017 MODELS
Yamaha announced its 2017 two-stroke, motocross, off-road and dual-sport models today. The line will include the 13 models that were in showrooms last year, plus a surprise new entry in the “Scrambler” division called the SVC950. The YZ250F motocross bike and the YZ250FX off-road competition bike have the most significant changes of the dirt models. Here are the details as reported by Yamaha.
For 2017, the YZ250F incorporates many changes including revised intake geometry for additional downdraft effect, which is matched to a 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.
Also, the 2017 YZ250F’s entire diecast crankcase features a new heat-treating process that was developed to increase strength. Inside, a new nickel-chromoly steel connecting rod offers additional durability to handle the increased power output.
New gear dogs, revised gear-tooth designs, and a host of smaller changes to the transmission on the 2017 YZ250F provide smoother shifting, as well as a stronger overall powertrain for improved durability.
Revised engine mounts and a reshaped swingarm pivot section on the 2017 YZ250F’s aluminum frame improve lateral rigidity, while 5mm lower footpegs help lower the rider’s center of gravity for improved machine balance and control. Also, suspension settings have been revised at both the front and rear to match the chassis updates. In addition, a redesigned air cleaner cover on the 2017 YZ250F helps prevent contact with the quick-release quarter-turn Dzus® air box fasteners and provides tool-less access to the air filter, which is positioned at the front of the bike to avoid roost from the rear wheel.
The lightweight and powerful YZ250FX has received numerous upgrades and improvements for 2017 including a new cylinder head featuring revised intake geometry for additional downdraft effect, which is matched to a shorter intake funnel in the airbox for improved top-end power. Inside the head, more aggressive camshaft profiles and valve springs boost output even further for 2017, while larger valve seats ensure excellent sealing and reliability. Also, 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 and stronger, and together with revised EFI mapping, improves combustion performance which results in excellent pulling power. The 2017 YZ250FX’s crankshaft and counterbalancer feature a revised balance ratio, for more predictive power delivery and reduced vibration and a new nickel-chromoly, steel connecting rod offers additional durability to handle the increased power output, and the crankcase features a new heat-treating process, which increases strength.
For added protection of the bike’s frame, the 2017 YZ250FX has a new, rugged, plastic skid plate. Also for 2017, the YZ250FX has a new 270mm front brake rotor (up from 250mm) and new front brake-pad material for exceptional stopping power and and performance. Both front and rear dampers on the 2017 YZ250FX feature new, optimized settings to further boost overall suspension performance, while the front forks utilize an improved, stronger oil-seal system for enhanced durability.
A new WR®-style fuel-level sensor in the 2017 YZ250FX’s fuel tank combines with new fuel-level and engine-warning indicators on the handlebars to provide ultimate convenience. The 2017 YZ250FX will be available in Team Yamaha Blue at a suggested retail price of $7,999. Bikes will arrive in Yamaha dealerships beginning in August.
The 2017 YZ450F receives updated rear brake-rotor material providing better heat resistance, durability, and braking feel. And, as on the 2017 YZ250F, the YZ450F features a redesigned air cleaner cover for 2017 that helps prevent contact with the quick-release quarter-turn Dzus® air box fasteners and provides tool-less access to the air filter that’s positioned at the front of the bike to avoid roost from the rear wheel.