These are the known mechanical and performance specifications for your 2016 TM Racing SMR 450F.
Basic Specs

Engine
Displacement449.16 ccm (27.41 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression
Bore/Stroke95.0 x 63.4 mm (3.7 x 2.5 inches)
Valves/Cylinder4
FuelingCarburettor. Keihin 39 mm
IgnitionKokusan CDI Electronic with variable advance
Exhaust
LubricationDry sump with 2 pump
CoolingLiquid
Drivetrain
Gearbox5-speed
Final DriveChain
ClutchMultiple-disk in oil-bath with hydraulic control
DrivelineStraight, tooth gear
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity8.20 litres (2.17 gallons)
Emissions
Chassis
Frame TypeAlluminium perimetral
Rake
Trail
Front SuspensionMarzocchi USD 45 mm (optional Marzocchi USD 50 mm)
Front Travel
Rear SuspensionSachs (optional TM Racing)
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase
Dry Weight
Wet Weight
Wheels & Brakes
Front Tire/Tyre120/70-17
Rear Tire/Tyre150/60-17
Front BrakesSingle disc. Wave disk with Brembo pump and radia l caliper
Front Brake Diameter320 mm (12.6 inches)
Rear BrakesSingle disc. Wave disk with Nissin pump and caliper.
Rear Brake Diameter240 mm (9.4 inches)
Wheels
Comments
Italian brand.