Engineered by Honda for the atv motorcycle segment, the 2015 Honda 400X pairs a 397 cc (24.2 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 85.0 x 70.0 mm (3.3 x 2.8 inches) with a 12.0:1 compression ratio.
On the scales, the 400X measures 185.1 kg (408 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 836 mm (32.9 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,217 mm (47.9 in) wheelbase engineered for quick, flickable steering geometry. The 9.84-liter (2.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Honda archive, this model family spans 3 indexed model years from 2014 to 2016, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
836 mm (32.9 in)
Engine
Displacement397.0 ccm (24.22 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression12.0:1
Bore x Stroke85.0 x 70.0 mm (3.3 x 2.8 inches)
Fuel SystemCarburettor. 38mm piston-valve with accelerator pump
IgnitionCD with electronic advance
LubricationDry sump
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchManual
DrivelineO-ring-sealed chain
Performance
Emission DetailsMeets current California Air Resources Board (CARB) off-road emissions standards.
Chassis
Front SuspensionIndependent double-wishbone with Showa® shocks, five-position spring preload adjustability; 8.2 inches travel
Front Travel208 mm (8.2 inches)
Rear SuspensionPro-Link® fully adjustable single Showa shock; 9.1 inches travel
Rear Travel231 mm (9.1 inches)
Wheelbase1217 mm (47.9 inches)
Ground Clearance104 mm (4.1 inches)
Wheels & Brakes
Front Tyre22/7-10
Rear Tyre20/10-9
Front BrakesDouble disc. Hydraulic.
Front Brake Ø174 mm (6.9 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Weight incl.185.1 kg (408.0 pounds)
Seat Height836 mm (32.9 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.
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.
