At the heart of the 2021 Honda CRF400RX enduro - offroad motorcycle, Honda pairs a 413 cc (25.2 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 92.0 x 62.1 mm (3.6 x 2.4 inches) with a 13.5:1 compression ratio.
On the scales, the CRF400RX measures 107.6 kg (237 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 965 mm (38 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,481 mm (58.3 in) wheelbase engineered for balanced agility and highway composure. The 7.3-liter (1.9 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Honda archive, this model family spans 2 indexed model years from 2021 to 2022, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
965 mm (38 in)
Engine
Displacement413.0 ccm (25.20 cubic inches)
Engine TypeSingle cylinder, four-stroke
Compression13.5:1
Bore x Stroke92.0 x 62.1 mm (3.6 x 2.4 inches)
Valves/Cylinder4
Fuel SystemInjection. Electronic Fuel injection with ESMB map selection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionDigital CDi
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchMulti plate wet
DrivelineSealed 520 chain; 13T/48T
Chassis
Frame TypeAluminium frame and swingarm
Rake27.1°
Trail114 mm (4.5 inches)
Front SuspensionShowa 49mm USD fork
Front Travel305 mm (12.0 inches)
Rear SuspensionShowa monoshock using Honda Pro-Link system
Rear Travel315 mm (12.4 inches)
Wheelbase1481 mm (58.3 inches)
Ground Clearance336 mm (13.2 inches)
Wheels & Brakes
Front Tyre90/90-21
Rear Tyre140/80-18
Front BrakesSingle disc. Hydraulic
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc. Hydraulic
Rear Brake Ø240 mm (9.4 inches)
WheelsDID DIRT STAR aluminium wheels. Metzeler Six Days Extreme tires.
Dimensions & Weight
Weight incl.107.6 kg (237.2 pounds)
Seat Height965 mm (38.0 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.
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.
