These are the known mechanical and performance specifications for your 2011 Yamaha YFM90.
Basic Specs
Engine
Displacement88.00 ccm (5.37 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression10.2:1
Bore/Stroke47.0 x 51.0 mm (1.9 x 2.0 inches)
Valves/Cylinder2
FuelingCarburettor
IgnitionDC-CDI
Exhaust
LubricationWet sump
CoolingAir
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity4.80 litres (1.27 gallons)
Emissions
Chassis
Frame Type
Rake
Trail
Front SuspensionIndependent double wishbone, 78 mm stroke
Front Travel
Rear SuspensionSwingarm, 83 mm stroke
Rear Travel
Seat
Seat Height654 mm (25.7 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height910 mm (35.8 inches)
Total Length1,490 mm (58.7 inches)
Total Width885 mm (34.8 inches)
Ground Clearance100 mm (3.9 inches)
Wheelbase1,010 mm (39.8 inches)
Dry Weight
Wet Weight120.0 kg (264.6 pounds)
Wheels & Brakes
Front Tire/Tyre18/7-8
Rear Tire/Tyre18/9-8
Front BrakesExpanding brake (drum brake)
Front Brake Diameter
Rear BrakesSingle disc
Rear Brake Diameter
Wheels
Comments