These are the known mechanical and performance specifications for your 2020 TM Racing MX 450 Fi 4T.
Basic Specs

Engine
Displacement449.0 ccm (27.40 cubic inches)
TypeTitanium valves
DetailsSingle cylinder, four-stroke
Max RPM
Compression
Bore/Stroke95.0 x 63.4 mm (3.7 x 2.5 inches)
Valves/Cylinder4
FuelingInjection. 44 mm throttle body
IgnitionKokusan, ECU
Exhaust
LubricationDry sump with 2 pumps
CoolingLiquid
Drivetrain
Gearbox6-speed
Final Drive
ClutchMultiuple-disk in oil-bath with hydaulic control
Driveline
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity7.50 litres (1.98 US gallons)
Emissions
Chassis
Frame TypeAlluminium perimetral
Rake
Trail
Front SuspensionUSD 48mm Kayana
Front Travel
Rear SuspensionTM Racing monoshock
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/Tyre80/100-21
Rear Tire/Tyre110/90-19
Front BrakesSingle disc. Wave disk with Nissin pump and caliper
Front Brake Diameter270 mm (10.6 inches)
Rear BrakesSingle disc. Wave disk with Nissin pump and caliper
Rear Brake Diameter245 mm (9.6 inches)
WheelsWire spoked, blue rims
Comments
Italian brand.