These are the known mechanical and performance specifications for your 2011 Tomberlin SDX-300 4x4 ATV.
Basic Specs

Engine
Displacement275.70 ccm (16.82 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression9.5:1
Bore/Stroke72.5 x 66.8 mm (2.9 x 2.6 inches)
Valves/Cylinder
FuelingCarburettor. Keihin
IgnitionCDI
Exhaust
Lubrication
CoolingLiquid
Performance
Horespower
Torque22.37 Nm (2.3 kgf-m or 16.5 ft.lbs)
Top Speed
Chassis
Frame TypeSteel
Rake
Trail
Front SuspensionMcPherson Strut
Front Travel
Rear SuspensionSwing Arm
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height1,194 mm (47.0 inches)
Total Length2,075 mm (81.7 inches)
Total Width1,140 mm (44.9 inches)
Ground Clearance
Wheelbase1,204 mm (47.4 inches)
Dry Weight295.0 kg (650.3 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre24/8-12
Rear Tire/Tyre24/11-12
Front BrakesSingle disc. Hydraulic
Front Brake Diameter
Rear BrakesSingle disc. Hydraulic
Rear Brake Diameter
Wheels
Comments