These are the known mechanical and performance specifications for your 2021 Honda CRF450RWE.
Basic Specs

Engine
Displacement449.7 ccm (27.44 cubic inches)
Type38mm intake valve, 31mm exhaust
DetailsSingle cylinder, four-stroke
Max RPM
Compression13.5:1
Bore/Stroke96.0 x 62.1 mm (3.8 x 2.4 inches)
Valves/Cylinder4
FuelingInjection. PGM-FI, 46mm downdraft throttle body
IgnitionDC-CDI
ExhaustTitanium Yoshimura
Lubrication
CoolingLiquid
Drivetrain
Gearbox5-speed
Final Drive
ClutchMulti plate wet
Driveline#520 Chain; 13T/49T
Performance
Horespower53.0 HP (38.7 kW) @ 9000 RPM
Torque48.0 Nm (4.9 kgf-m or 35.4 ft.lbs) @ 7000 RPM
Top Speed170.0 km/h (105.6 mph)
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity6.28 litres (1.66 US gallons)
Emissions
Chassis
Frame TypeAluminium twin tube
Rake27.7 deg
Trail114 mm (4.5 inches)
Front Suspension49mm inverted Showa fork with rebound and compression damping adjustability.
Front Travel305 mm (12.0 inches)
Rear SuspensionPro-Link® Showa single shock with adjustable spring preload, rebound and compression damping adjustability.
Rear Travel312 mm (12.3 inches)
Seat
Seat Height965 mm (38.0 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1271 mm (50.0 inches)
Total Length2191 mm (86.3 inches)
Total Width827 mm (32.6 inches)
Ground Clearance335 mm (13.2 inches)
Wheelbase1481 mm (58.3 inches)
Dry Weight
Wet Weight112.0 kg (247.0 pounds)
Wheels & Brakes
Front Tire/Tyre80/100-21
Rear Tire/Tyre120/80-19
Front BrakesSingle disc. Hydraulic. Two-piston calipers.
Front Brake Diameter260 mm (10.2 inches)
Rear BrakesSingle disc. Hydraulic. Single-piston caliper.
Rear Brake Diameter240 mm (9.4 inches)
WheelsGeomax MX33 tires.
Comments
Standard, Smooth and Aggressive riding modes. Launch Control. Model id: CRF450RWE.