2019 YZ85 (2-Stroke)

$5,999

Redesigned from the ground up, the new YZ85 has been built to dominate the 85 cc class. Featuring a new engine with the Yamaha Power Valve System (YPVS), new suspension, revised six-speed transmission and adjustable ergonomics, the 2019 YZ85 is ready to win races straight off the dealership floor.

Dealer #: 6249


INQUIRY ABOUT PRODUCT

NEW FOR 2019

  • Yamaha Power Valve System (YPVS)
  • New cylinder head and longer connecting rod
  • New crankcase design
  • New spacer-style reed valve intake
  • New optimized expansion chamber
  • Revised transmission
  • Adjustable rider ergonomics
  • New swingarm design
  • Upgraded brake line and wave-style rotors
  • New Dunlop MX3S tires

Key Features

  • Potent, easy-to-service two-stroke engine
  • Broad, tractable power across the rev range
  • Smooth-shifting, six-speed, close-ratio transmission
  • Compact, semi-double-cradle, single-backbone steel frame
  • Race-ready, fully adjustable suspension
  • Aggressive YZ styling

Engine

  • Lightweight, compact, 85cc, liquid-cooled, crankcase reed-valve inducted, 2-stroke single.
  • Yamaha Power Valve System (YPVS).
    • Mechanical power valve system delivers effective exhaust timing throughout the entire rev range
    • Provides excellent power and torque characteristics
    • Boosts compression ratio and power output
    • Delivers responsive acceleration just as the rider intends
    • Slit-shaped valve on the side of the exhaust port operates in response to engine rpm
    • In low-to-mid-rpm range when exhaust timing is slower, valve moves to cover the top part of the exhaust port
    • In high rpm range when quick exhaust timing is needed, valve recedes and exhaust port is fully uncovered
    • Shifting is reduced due to broader powerband
  • Crankcase reed valve induction and 28 mm Keihin flat-slide carburetor.
    • crisp, seamless throttle response across the powerband
    • new design features spacer-style reed valve intake for improved gas flow
    • Carburetor settings optimized for updated engine
  • Lightweight, forged piston.
    • less reciprocating mass and less friction for a faster revving engine
    • excellent durability
  • CDI 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, six-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
    • Gear dimensions optimized for 2019 based on YPVS engine performance
  • Heavy-duty, multi-plate clutch.
    • smooth positive shifting
  • Quick-remove, clutch sub-cover.
    • fast, easy clutch access
  • Lightweight radiator with high-capacity cores and 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 expenses

  • Lightweight exhaust system.
    • revised expansion chamber matches the improved output of YPVS engine
    • aluminium silencer is re-packable to maintain optimum performance and reduced noise levels

Chassis/Suspension

  • Rigid, semi-double cradle, single backbone, steel frame.
    • blend of light weight and 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)
  • Revised, lightweight box-section aluminium swingarm.
    • composite chain guide and updated chain adjusters provide easier maintenance
    • provides excellent rear-wheel control and traction
  • Adjustable 36mm inverted KYB fork with 275 mm (10.8 in) of wheel travel.
    • new low-friction outer tubes and internals are similar to full-size YZ models
    • 20 clicks of both compression and rebound damping
    • adjustable design allows suspension settings to match rider weight, rider style and track conditions
    • YZ125 / 250-based “big bike” valving and low-friction fork seals
    • smooth, compliant stroke for superior suspension performance and handling
    • front fork guard redesigned with brake hose outside of fork guard
  • Fully adjustable Monocross link rear suspension provides 282mm (11.1 in) of wheel travel.
    • Kayaba piggyback shock reduces shock temperatures during a long moto for fade resistant damping and consistent performance.
    • adjustments include “threaded” spring preload, 15 clicks of compression and 20 clicks of rebound damping
    • optional shock springs are available through Yamaha Genuine Parts and Accessories
  • 220 mm front stainless steel wave front disc with twin-piston caliper.
    • delivers strong stopping power with excellent control and great feedback.
  • New tapered aluminum handlebar and adjustable crown.
    • Tapered handlebar
  • “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.
  • 190 mm stainless steel rear disc brake squeezed by a single piston caliper.
    • Excellent stopping power
    • caliper is protected by a rugged plastic protector
  • Lightweight, blue 17-inch front and 14-inch rear DID rims.
    • excellent durability
    • reduces unsprung weight for optimal suspension performance
    • new Dunlop MX3S knobby tires offer exceptional traction
  • Modern, aggressive, slim line bodywork.
    • slim body design for excellent freedom of movement and rider mobility

DETAILS

  • Sealed tapered steering head bearings for extra durability
  • Serrated rear brake pedal and folding shift lever tip
  • Wide, cast-alloy serrated footpegs offer good grip
  • Stainless steel inner clutch cable for longer life and smooth operation
  • Rubber boots on clutch and brake levers to reduce dirt, mud and water entry for durability
  • Convenient lifting holes in side cover
  • New rugged chain guide helps prevent chain from de-railing and also protects rear sprocket
  • E10 friendly fuel system components

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