At the heart of the 2025 Honda Crf450Rx enduro - offroad motorcycle, Honda relies on a 450 cc (27.5 cu in) liquid-cooled single cylinder, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 96.0 x 62.1 mm (3.8 x 2.4 inches) with a 13.5:1 compression ratio.
On the scales, the Crf450Rx measures 116.1 kg (256 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 958 mm (37.7 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,478 mm (58.2 in) wheelbase engineered for balanced agility and highway composure. The 7.95-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Honda archive, this model family spans 10 indexed model years from 2017 to 2026, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
958 mm (37.7 in)
Engine
Displacement450.0 ccm (27.46 cubic inches)
Engine TypeSingle cylinder, four-stroke
Compression13.5:1
Bore x Stroke96.0 x 62.1 mm (3.8 x 2.4 inches)
Valves/Cylinder4
Fuel SystemInjection. Programmed Fuel Injection (PGM-FI), 44mm downdraft throttle body
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionFull transistorized
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchMultiplate wet, hydraulically actuated (6 springs, 8 plates)
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.
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.
