Yamaha YZ85, Where America Goes for Yamaha YZ85 and Yamaha YZ85 parts

24 Апр 2015 | Author: | Комментарии к записи Yamaha YZ85, Where America Goes for Yamaha YZ85 and Yamaha YZ85 parts отключены


Yamaha YZ 85

YZ 85 THERE’S NOTHING MINI ABOUT IT.

Presenting the YZ85. Crowned MX Action’s 2002 80cc of the Year** (in its very first year, no less), this potent little screamer is everything the budding young factory racer could ask for.

Small-bore world domination starts right here. With a liquid-cooled, 85cc, case-reed, two-stroke engine putting down wicked, corner-launching low- and mid-range power and blistering top-end through a slick-shifting 6-speed transmission. Seamless throttle response is provided at all RPM by way of its 28mm Keihin flat-slide carb.

And race-bred chassis design — featuring a rigid, lightweight twin-spar frame and swingarm, and adjustable, YZ250/125-spec suspension — that lets you soak up the whoops. Hydraulic disc brakes fitted with large-diameter stainless steel rotors (220mm front, 190mm in back) and high-friction pads provide class -beating stopping power with progressive, one-finger lever feel that lets you slow quicker and dive deeper with unbeatable precision.

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YZ 85 Engine :

The industry’s mightiest mini gets its lightweight, liquid-cooled two-stroke engine capacity increased from 83 to 85cc (bore x stroke = 47.5 x 47.8mm) to deliver even harder-hitting, moto-winning power throughout the RPM range.

Crankcase features reshaped scavenging port for improved mid-range and top-end output.

Crankcase reed valve induction and 28mm Keihin flat-slide carburetor ensures seamless throttle response across the powerband, while aluminum carb body helps reduce weight.

All-new, larger-diameter (47.5mm) forged piston reduces reciprocal mass and friction for faster revving with greater durability.

New-design digital CD ignition system puts out a more precise spark and monitors engine speed to ensure optimal timing for quicker, stronger response during hard acceleration.

Smooth-shifting, 6-speed transmission features new-design main and drive axles, while heavy-duty, multi-plate clutch delivers maximum hook-up for outstanding acceleration and corner-exiting power.

Involute spline set-up in clutch means smoother shifting under power with greater durability at competition-level usage.

Clutch cover features a sub-cover for easy access during maintenance.

Gearbox features a new-design shift shaft for smoother shifting feel with no spring friction.

Lightweight radiator has larger cores and more louvers, while retooled water pump features a cast aluminum (vs. resin) impeller to ensure maximum cooling efficiency.

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

Airbox design with reshaped filter ensures greater air cleaning performance and easier maintenance.

Primary kickstarting features a reshaped lever with a sealed pivot to keep out water and mud, enhancing durability.

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