Yamaha YZ 85back 2010 forward

Water cooled, 84cc, Single, 2-stroke, Reed valve with power valve

Torque: 11.7 Nm (8.63 lb-ft) @ 8750 rpm
Final drive: Chain
Curb weight: 152.1 lbs
Category: Offroad
Tags: Cross, Production racer
Engine and transmission
Engine type: 1 cylinders, 2-stroke, Single
Displacement: 84 cc (5.13 cubic inches)
Bore × stroke: 1.87 inch × 1.88 inch (square)
Cooling system: Water cooled
Torque: 11.7 Nm (8.63 lb-ft) @ 8750 rpm
Throttle: Cable operated
Valves
Valve train: Reed valve with power valve, variable
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Carburetor
Ignition type: Digital CDI
Funnel diameter: 1.1 inch
Compression: 8.2:1
Engine mounting: Transverse
Lubrication system: Wet sump
Gear box: Manual 6-speed
Clutch: Wet, multiple discs, cable operated
Final drive: Chain
Spark plug pipe type: NGK, BR10EG
Motor oil: Synthetic
Starter: Kick-starter
Dimensions
Physical measures
Length: 71.6 inch
Width: 29.8 inch
Height: 45.7 inch
Wheel base: 49.4 inch
Ground clearance: 13.82 inch
Seat height: 34 inch
Weight
Curb weight: 152.1 lbs
Dry weight: 145.5 lbs
Chassis and suspension
Frame type: aluminium, Double cradle frame
Front
Suspension: Cartridge
Suspension travel: 10.83 inch
Brake: Single Disk, Ø8.66 inch
Tire: 70 / 70 R17 M
Tire pressure: 0.07 PSI
Rear
Suspension: mono shock, Swingarm
Suspension travel: 11.1 inch
Brake: Disk, Ø7.48 inch
Tire: 90 / 70 R14 M
Tire pressure: 0.07 PSI
Other
ABS available: No
Fuel capacity: 1.32 gals
Number of riders: 1 person

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