Positioned in Piaggio's scooter motorcycle lineup, the 2007 Piaggio X8 400 utilizes a 399 cc (24.4 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, maximum torque reaches 37.6 Nm (27.7 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. Internal engine geometry specifies a bore and stroke of 85.8 x 69.0 mm (3.4 x 2.7 inches).
On the scales, the X8 400 measures 198 kg (437 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,540 mm (60.6 in) wheelbase engineered for planted straight-line stability. The 12-liter (3.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Standover Height
790 mm (31.1 in)
Engine
Displacement399.0 ccm (24.35 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Torque37.6 Nm (3.8 kgf-m or 27.7 ft.lbs) @ 5500 RPM
Bore x Stroke85.8 x 69.0 mm (3.4 x 2.7 inches)
Valves/Cylinder4
Fuel SystemInjection
IgnitionInductive
LubricationSeparate with automatic mixer
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
ClutchAutomatic centrifuge type
Chassis
Front SuspensionØ 35 mm tele-hydraulic fork
Rear SuspensionTwo dual-effect shock absorbers and four-position spring preload
Wheelbase1540 mm (60.6 inches)
Wheels & Brakes
Front Tyre120/70-14
Rear Tyre130/70-12
Front BrakesDouble disc
Front Brake Ø240 mm (9.4 inches)
Rear BrakesSingle disc
Rear Brake Ø240 mm (9.4 inches)
Dimensions & Weight
Weight incl.198.0 kg (436.5 pounds)
Seat Height790 mm (31.1 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.
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.
