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Key Features

Features Gallery
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    Powerful 85cc engine with YPVS

    The 85cc liquid cooled engine features the Yamaha Power Valve System (YPVS) that boosts overall performance and contributes towards the bike’s easy to use torque. Running with a higher compression ratio – and equipped with a close ratio 6-speed transmission – the YZ85 delivers outstanding acceleration with race winning power.

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    Plastic resin reed valves and optimized exhaust

    The high-performance intake and exhaust systems match the YPVS so that optimum potential can be achieved as soon as the gate drops. Plastic resin reed valves and an expansion chamber deliver controllable power with explosive acceleration – and a heart-stirring ripple – exactly when needed, to keep you way ahead of the competition.

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    36mm KYB® inverted forks

    Featuring specially machined one-piece tapered outer tubes that aligns them well with the rigidity balance of the frame, and with 36mm inner tubes, the front forks provide optimized damping settings. Combined with the fully adjustable low friction cartridge forks, the YZ85 has the most sophisticated front fork design ever used on a youth YZ motocross bike. Fitted with fork guards, this high-tech front end is built to master even the most demanding terrain.

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    Wave-type discs, with rigid brake hoses

    The YZ85’s 220mm front and 190mm rear wave-type discs run cooler and give improved self-cleaning for strong stopping power. For balanced feel and precise control the YZ85 features brake hoses with a lower expansion rate, and the front hose’s routing simplifies maintenance.

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    4-position adjustable tapered aluminium handlebars

    Offering 27mm of potential movement, the YZ85’s 4-position adjustable handlebars make it easy to set the bike up to suit rider’s growth. Manufactured from aluminium, the tapered handlebars and cast upper triple clamp contribute towards the YZ85’s low weight of 73kg.

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    YZ450F-inspired aluminium swingarm design

    For easy chain adjustment and quick rear wheel removal, the YZ85 has a lightweight aluminium swingarm that features chain adjusters inspired by the design used on the YZ450F. And to minimize unsprung weight there’s also a tough composite chain guide.

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    Monocross rear suspension

    Like the front forks, the Monocross rear suspension is directly descended from the advanced technology used on our factory race bikes. The long aluminium swingarm activates the progressive link-type Monocross suspension to give 282mm rear wheel travel (LW model 287mm) that can handle everything from washboard sections through to hard landings.

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    Sharp and dynamic body design

    When you look good you feel good – and with its sharp bodywork and factory-bike inspired graphics, the YZ85 is one of the most dynamic looking youth motocross bikes. With its strong engine and chassis performance as well as adjustable ergonomics, this high-tech 85 is the ultimate kids’ race bike.

Technical Specifications

Download Factsheet
  • Engine
    Engine type
    Single cylinder, 2-stroke, Liquid-cooled, Reed valve
    Bore x stroke
    47.5 mm x 47.8 mm
    Compression ratio
    8.1 : 1
    Lubrication system
    Clutch Type
    Wet, multiple-disc coil spring
    Ignition system
    Starter system
    Transmission system
    Constant Mesh, 6-speed
    Final transmission
    Keihin PWK28/1
  • Chassis
    Semi double cradle
    Caster Angle
    Front suspension system
    Upside-down telescopic fork
    Rear suspension system
    Swingarm, (link suspension)
    Front travel
    275 mm
    Rear Travel
    287 mm
    Front brake
    Single Disc, Ø220 mm
    Rear brake
    Single Disc, Ø190 mm
    Front tyre
    70/100-19 42M
    Rear tyre
    90/100-16 52M
  • Dimensions
    Overall length
    1,903 mm
    Overall width
    758 mm
    Overall height
    1,156 mm
    Seat height
    904 mm
    Wheel base
    1,286 mm
    Minimum ground clearance
    393 mm
    Wet weight (including full oil and fuel tank)
    73 kg
    Fuel tank capacity
    Oil tank capacity