Positioned in Honda's enduro - offroad motorcycle lineup, the 2021 Honda CRF450X utilizes a 449 cc (27.4 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 44.5 HP (32.5 kW) at 7,500 rpm while maximum torque reaches 41.3 Nm (30.5 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 99.1 HP per liter and a 500 rpm working window between peak torque (7,000 rpm) and peak power (7,500 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the CRF450X measures 124.7 kg (275 lbs) wet (curb), translating to a power-to-weight ratio of 0.36 HP/kg (2.8 kg per horsepower). Rider ergonomics and chassis geometry center around a 963 mm (37.9 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,491 mm (58.7 in) wheelbase engineered for balanced agility and highway composure. The 7.61-liter (2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Honda archive, this model family spans 18 indexed model years from 2009 to 2026, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
99.1 HP/L
Power-to-Weight
0.36 HP/kg (2.8 kg/HP)
Power Band Window
7,000–7,500 rpm
Standover Height
963 mm (37.9 in)
Engine
Displacement449.0 ccm (27.40 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power44.5 HP (32.5 kW)) @ 7500 RPM
Torque41.3 Nm (4.2 kgf-m or 30.5 ft.lbs) @ 7000 RPM
Compression12.0:1
Bore x Stroke96.0 x 62.1 mm (3.8 x 2.4 inches)
Valves/Cylinder4
Fuel SystemInjection. Programmed Fuel Injection (PGM-FI), 46mm downdraft throttle body
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionDC-CDI
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Driveline#520 T-ring-sealed chain; 13T/51T
Chassis
Frame TypeSemi-double cradle, aluminium twin-spar
Rake27.4°
Trail142 mm (5.6 inches)
Front Suspension49mm leading-axle inverted telescopic Showa coil-spring 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)
Wheelbase1491 mm (58.7 inches)
Ground Clearance333 mm (13.1 inches)
Wheels & Brakes
Front Tyre80/100-21
Rear Tyre110/100-18
Front BrakesSingle disc. Two-piston calipers.
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc
Rear Brake Ø240 mm (9.4 inches)
WheelsDunlop MX52 tires
Dimensions & Weight
Weight incl.124.7 kg (275.0 pounds)
Seat Height963 mm (37.9 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
