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Yamaha Motocross Bike – YZ85



Step up to the perfect bike and earn victory after victory aboard this lightweight, 2‑stroke that boasts reliability and agility.


  • YPVS™ Two-Stroke Power
    The 85cc liquid-cooled, two-stroke engine features the Yamaha Power Valve System for broad, tractable power across the rev range without losing peak power at high rpm.
  • Fully-Adjustable Suspension
    Lightweight 36mm KYB® inverted cartridge fork features low-friction outer tubes, plenty of travel and external compression and rebound damping adjustability, mated to a race-proven fully-adjustable rear shock.
  • High-Spec Wheels and Brakes
    Lightweight 17-inch front and 14-inch rear rims are durable and reduce unsprung weight for optimal suspension performance while the big 220mm and 190mm disc brakes offer precise control and feature Dunlop® MX3S® knobbies for exceptional traction.
  • Adjustable Rider Ergonomics
    The four-position adjustable handlebar mounts and taper-style handlebar allow the rider to tune the ergonomics to suit their size and preferences.



Engine Type: 85cc liquid-cooled 2-stroke; reed-valve inducted

Bore x Stroke: 47.5mm x 47.8mm

Compression Ratio: 8.2~9.6:1

Fuel Delivery: Keihin® PWK28 carburetor

Transmission: 6-speed; multiplate wet clutch

Final Drive: Chain


Suspension / Front: Inverted fork; fully adjustable, 10.8-in travel

Suspension / Rear: Single shock; fully adjustable, 11.1-in travel

Brakes / Front: Hydraulic disc, 220mm

Brakes / Rear: Hydraulic disc, 190mm

Tires / Front: 70/100-17 Dunlop® MX3S®

Tires / Rear: 90/100-14 Dunlop® MX3S®


L x W x H: 71.7 in x 29.9 in x 45.1 in

Seat Height: 33.1 in

Wheelbase: 49.4 in

Rake (Caster Angle): 26.3°

Trail: 3.5 in

Maximum Ground Clearance: 13.0 in

Fuel Capacity: 1.3 gal

Wet Weight***: 161 lb


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