At the heart of the 2009 Kawasaki ER-6n naked motorcycle, Kawasaki features a 649 cc (39.6 cu in) liquid-cooled twin, four-stroke configuration. In factory specification, maximum torque reaches 65.8 Nm (48.5 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. Internal engine geometry specifies a bore and stroke of 83.0 x 60.0 mm (3.3 x 2.4 inches) with a 11.3:1 compression ratio.
On the scales, the ER-6n measures 200.5 kg (442 lbs) dry. Rider ergonomics and chassis geometry center around a 785 mm (30.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,405 mm (55.3 in) wheelbase engineered for quick, flickable steering geometry. The 15.51-liter (4.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 12 indexed model years from 2006 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
785 mm (30.9 in)
Engine
Displacement649.0 ccm (39.60 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTwin, four-stroke
Torque65.8 Nm (6.7 kgf-m or 48.5 ft.lbs) @ 7000 RPM
Compression11.3:1
Bore x Stroke83.0 x 60.0 mm (3.3 x 2.4 inches)
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionDigital CDI
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Chassis
Frame TypeSemi-double cradle, high-tensile steel
Rake24.5°
Trail102 mm (4.0 inches)
Front Suspension41mm hydraulic telescopic fork
Front Travel119 mm (4.7 inches)
Rear SuspensionSingle offset laydown shock with adjustable spring preload
Rear Travel124 mm (4.9 inches)
Wheelbase1405 mm (55.3 inches)
Wheels & Brakes
Front Tyre120/70-17
Rear Tyre160/60-17
Front BrakesDouble disc
Front Brake Ø300 mm (11.8 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight200.5 kg (442.0 pounds)
Seat Height785 mm (30.9 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.
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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
