2019 Yamaha YZ85 (2-Stroke)



Dirt Motocross


2019 Yamaha YZ85 (2-Stroke)



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.


For 2019, the YZ85's compact, lightweight 85 cc two-stroke engine features revisions to the intake, exhaust and transmission. The addition of YPVS creates broad, tractable power across the rev range without losing peak power at high rpm.


A new front fork, new swingarm, new wave-style brake rotors and adjustable ergonomics complement the YZ85's semi-double-cradle, single-backbone steel frame and fully adjustable suspension.

Features may include:


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

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


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)


  • 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