At the heart of the 2007 Yamaha YZ85 LW cross - motocross motorcycle, Yamaha relies on a 84.7 cc (5.2 cu in) liquid-cooled single cylinder, two-stroke powerplant. Internal engine geometry specifies a 8.2:1 compression ratio.
On the scales, the YZ85 LW measures 66 kg (146 lbs) dry. Rider ergonomics and chassis geometry center around a 864 mm (34 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,255 mm (49.4 in) wheelbase engineered for quick, flickable steering geometry. The 5-liter (1.3 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 3 indexed model years from 2007 to 2010, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
864 mm (34 in)
Engine
Displacement84.7 ccm (5.17 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Compression8.2:1
Fuel SystemCarburettor. Keihin PWK28/1
IgnitionCDI
LubricationPremix
CoolingLiquid
Transmission
Final DriveChain (final drive)
ClutchWet, multiple-disc coil spring
Chassis
Frame TypeSemi-double cradle
Front SuspensionTelescopic fork
Front Travel275 mm (10.8 inches)
Rear SuspensionSwingarm (link suspension)
Rear Travel282 mm (11.1 inches)
Wheelbase1255 mm (49.4 inches)
Ground Clearance351 mm (13.8 inches)
Wheels & Brakes
Front Tyre70/0-M17
Rear Tyre90/0-M14
Front BrakesSingle disc
Front Brake Ø220 mm (8.7 inches)
Rear BrakesSingle disc
Rear Brake Ø190 mm (7.5 inches)
Dimensions & Weight
Dry Weight66.0 kg (145.5 pounds)
Seat Height864 mm (34.0 inches) If adjustable, lowest setting.
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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
