Positioned in Yamaha's cross - motocross motorcycle lineup, the 2024 Yamaha YZ85 pairs a 85 cc (5.2 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 47.5 x 47.8 mm (1.9 x 1.9 inches) with a 9.6:1 compression ratio.
On the scales, the YZ85 measures 73 kg (161 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 841 mm (33.1 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,255 mm (49.4 in) wheelbase engineered for quick, flickable steering geometry. The 4.92-liter (1.3 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 19 indexed model years from 2008 to 2026, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Front SuspensionKYB Inverted fork, fully adjustable
Front Travel274 mm (10.8 inches)
Rear SuspensionKYB Single shock, fully adjustable
Rear Travel282 mm (11.1 inches)
Wheelbase1255 mm (49.4 inches)
Ground Clearance320 mm (12.6 inches)
Wheels & Brakes
Front Tyre70/100-17
Rear Tyre90/100-14
Front BrakesSingle disc. Hydraulic.
Front Brake Ø220 mm (8.7 inches)
Rear BrakesSingle disc. Hydraulic.
Rear Brake Ø190 mm (7.5 inches)
WheelsDunlop® Geomax MX3S tyres
Dimensions & Weight
Weight incl.73.0 kg (161.0 pounds)
Seat Height841 mm (33.1 inches) If adjustable, lowest setting.
Overall Height1135 mm (44.7 inches)
Overall Length1821 mm (71.7 inches)
Overall Width759 mm (29.9 inches)
Fuel Capacity4.92 litres (1.30 US gallons)
Other
StarterElectric
Color OptionsTeam Yamaha Blue
Warranty30 Day Limited Factory Warranty
Notes
The 85cc liquid-cooled, two-stroke engine features the Yamaha Power Valve System (YPVS™) for increased low- and mid-range power without losing peak power at high rpms, reducing the need for frequent shifting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
