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2020 Yamaha YZ85LW Review and Specs

Updated: Jun 03, 2023
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The 2020 Yamaha YZ85LW is a star in the youth motocross scene. Many of today’s professional racers were inspired by this dirt bike. It is the bike that led them to their glorious wins. The new YZ85LW can turn your child’s dreams into a reality. Just like the YZ250F, the new model is completely new. Its engine is designed with the Yamaha’s YPVS power valve improving its performance.

Many of this dirt bike’s parts are interchangeable with Yamaha YZ65’s parts making it easy to transition and less hassle for maintenance. Although the outgoing model won the 2018 Australian Junior National title, the new model’s engine has been fitted with a completely revised transmission, intake, and exhaust. With the new features, your kid is ready to win motocross races.

2020 Yamaha YZ85LW for sale
Source: Yamaha

YZ85LW Specs:

  • 85cc displacement
  • YPVS two-stroked, liquid-cooled engine
  • Bore x Stroke: 47.5mm x 47.8mm 
  • 8.1-9.6:1 compression ratio
  • CDI ignition
  • Kick starter system
  • 5-litre fuel tank capacity
  • 6-speed constant mesh transmission
  • Chain final transmission
  • 275mm travel telescopic forks front suspension
  • 287mm travel swingarm rear suspension
  • 220mm single hydraulic front discs
  • 190mm single hydraulic rear discs
  • 1285mm wheelbase
  • 841mm seat height
  • Weights: 73kg 

Key Features

2020 Yamaha YZ85LW specs
Source: Yamaha
  • The crankcase is designed with a reed valve and a 28mm Keihin carburettor for better gas flow.
  • The radiator is light in weight with bigger louvres and cores. 
  • Aluminium vs resin impeller for improved cooling.
  • The new expansion chamber optimizes gas flow due to the YPVS engine output.
  • High-flow airbox.
  • Updated chain adjusters.
  • Adjustable taper-style handlebars.
  • 220mm in diameter front disc and 190mm in diameter rear disc for better braking.
  • High-performance tyres to traction on various terrains.

The new two-stroke YPVS engine

With a two-stroke, liquid-cooled engine, the 2020 model now features the Yamaha YPVS technology that prevents the bike from losing power at higher levels of rpm. Moreover, YPVS reduces the need for frequent shifting and enhances drivability. 

For enhanced power output and compression ratio, there is a longer rod and a new head that works best for both.

Rider ergonomics

The new taper style, a four-position adjustable handlebar makes it easy for the rider to tune it to the position they feel more comfortable at. With the rear fender, flat fuel tank, side panels, and radiator shrouds, your kids will enjoy the generous freedom of movement.

  • Adjustable rider ergonomics to suit your preferences
  • Lightweight rims (durable and ensure optimum suspension)
  • Easy maintenance
  • High performance
  • No need for frequent shifting
  • Some kids don’t like the positioning of the fuel tank
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