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2017 YZ85 (2-Stroke)


Plus taxes-fees.

The YZ85 is ready to race right out of the crate with features like a super potent 85cc, crankcase reed-valve 2-stroke power plant, a rigid single backbone frame and adjustable suspension. Join the “bLU cRU” and get ready to fill your trophy case.

Lightweight, compact, 85cc, liquid-cooled, crankcase reed-valve inducted, 2-stroke single.

Rigid, semi-double cradle, single backbone, steel frame is lightweight and incredibly strong providing minimal flex for razor-sharp moto-wining handling.

2-stroke, liquid-cooled,crankcase reed-valve,single
Bore and Stroke
47.5 x 47.8mm
Compression Ratio
Fuel Delivery
Keihin PWK28
Ignition / Starting
CDI / Kick
Final Drive
Suspension (Front)
Adjustable 36mm inverted fork / 275mm (10.8") wheel travel
Suspension (Rear)
Fully adjustable link Monocross / 282mm (11.1") wheel travel
Brakes (Front)
220mm disc / twin piston
Brakes (Rear)
190mm disc / single piston
Tires (Front)
Tires (Rear)
1,820mm (71.7")
760mm (29.9")
1,125mm (44.3")
1,255mm (49.4")
Ground Clearance
330mm (13")
Seat Height
840mm (33.1")
Fuel Capacity
5 litres (1.1 imp. gallons)
Wet Weight
71kg (157 lb)
Yamaha Racing Blue


Key Features

  • Potent, easy to service, crankcase reed inducted, 2-stroke power plant
  • Smooth shifting, 6-speed close ratio transmission
  • Compact, semi-double cradle, single back bone, steel frame
  • Race-ready, fully adjustable suspension.
  • Front & rear disc brakes
  • Aggressive, modern styling


  • Lightweight, compact, 85cc, liquid-cooled, crankcase reed-valve inducted, 2-stroke single.
  • Crankcase reed valve induction & 28mm Keihin flat-slide carburetor.
    • crisp, seamless throttle response across the powerband
  • Lightweight, forged piston.
    • less reciprocating mass & less friction for a faster revving engine
    • excellent durability
  • CD ignition system.
    • provides a hot, precise spark for fast sure starts
    • provides optimal timing for quicker, stronger response at all rpms
    • maintenance-free
  • Smooth-shifting, 6-speed transmission.
    • involute design increases the surface area contact between the gears
    • special involute splines on main and drive shafts provide maximum engagement / hook-up for each gear for smoother, more positive shifts
    • gear ratios are well matched to engine output
  • Heavy-duty, multi-plate clutch.
    • smooth positive shifting
  • Quick remove, clutch sub-cover.
    • fast, easy clutch access
  • Lightweight radiator with high capacity cores & special louvers to direct the air through the rad.
    • maximum cooling efficiency
  • Large capacity airbox with washable, dual-stage, foam filter.
      • excellent filtering qualities

    reduced tune-up expenses... foam filter can be washed & re-used

  • Lightweight exhaust system.
    • specially designed expansion chamber for a broad powerband with strong low-end punch
    • aluminium silencer is re-packable to maintain optimum performance & reduced noise levels


  • Rigid, semi-double cradle, single backbone, steel frame.
    • blend of light weight & good strength
    • minimal flex for razor-sharp, moto-wining handling
  • Detachable rear subframe.
    • allows easy access for suspension maintenance
    • reduces costs in the event of a loop-out (subframe can be purchased separately)
  • Lightweight box-section aluminium swingarm.
    • provides excellent for excellent rear wheel control &traction
  • Adjustable 36mm inverted Kayaba fork provides 275mm (10.8") of wheel travel.
    • adjusts for compression & rebound damping. Adjustments include: 20 clicks of compression damping & 20 clicks of rebound damping
    • adjustable design allows rider (tuner) to tailor settings to match rider weight, rider style & track conditions
    • YZ125 / 250 based "big bike" valving & low-friction fork seals
    • smooth, compliant stroke for superior suspension performance & handling
    • optional fork springs are available through Yamaha Genuine Parts & Accessories
  • Fully adjustable Monocross link rear suspension provides 282mm (11.1") of wheel travel.
    • Kayaba piggyback shock reduces shock temperatures during a long moto for fade resistant damping & consistent performance.
    • adjustments include "threaded" spring preload, 15 clicks of compression & 20 clicks of rebound damping
    • optional shock springs are available through Yamaha Genuine Parts & Accessories
  • 220mm front stainless steel disc with twin piston caliper
    • delivers strong stopping power with excellent control and great feedback.
  • "Shorty style" adjustable front brake lever.
    • adjusts to fit various hand sizes
  • Clutch lever holder allows for clutch lever reach adjustment.
    • adjusts to fit various hand sizes.
  • 190mm stainless steel rear disc brake squeezed by a single piston caliper.
    • Excellent stopping power
    • caliper is protected by a rugged plastic protector
  • Lightweight, 17" front & 14" rear DID rims
    • excellent durability
    • reduces unsprung weight for optimal suspension performance
  • Modern, aggressive, slim line bodywork.
    • slim body design for excellent freedom of movement & rider mobility
    • seat features a pebble finish seat cover for grip


  • Sealed tapered steering head bearings for extra durability
  • Serrated rear brake pedal & folding shift lever tip
  • Wide, cast-alloy serrated footpegs offer good grip
  • Stainless steel inner clutch cable for longer life & smooth operation
  • Rubber boots on clutch & brake levers to reduce dirt, mud & water entry for durability
  • Convenient lifting holes in side cover
  • Rugged chain guide helps prevent chain from de-railing & also protects rear sprocket.
  • YZ85 large wheel kit (19"/17") is available through Yamaha Genuine Parts & Accessories.
  • E10 friendly fuel system components
Curb Weight:71kg (157 lb)
Condition:Brand New
Stock Number:YZ85 (2-Stroke)
Colour:Yamaha Racing Blue
Model:YAMAHA Off Road - Competition
Engine Type:2-stroke, liquid-cooled,crankcase reed-valve,single - 85cc
Fuel Capacity:5 litres (1.1 imp. gallons)

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