These are the known mechanical and performance specifications for your 2005 TM Racing MX 450 F.
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 FCR 41 mm
IgnitionKoukusan CDI electronic w/ variable advance
Exhaust
LubricationDry sump with double rotor pump.
CoolingLiquid
Drivetrain
Gearbox5-speed
Final DriveChain
ClutchMultiple-disk in oil-bath with hydraulic control
Driveline
Chassis
Frame TypeCr-Mo steel. Perimetral oval section.
Rake
Trail
Front SuspensionKayba/Paioli USD 48 mm
Front Travel
Rear SuspensionOhlins
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/Tyre90/90-21
Rear Tire/Tyre110/90-19
Front BrakesSingle disc
Front Brake Diameter270 mm (10.6 inches)
Rear BrakesSingle disc
Rear Brake Diameter245 mm (9.6 inches)
Wheels
Comments
Electric starter as option.