At the heart of the 2016 ATK GV650 custom - cruiser motorcycle, ATK utilizes a 647 cc (39.5 cu in) liquid-cooled v2, four-stroke layout. In factory specification, peak output is rated at 80 HP (58.4 kW) at 9,250 rpm while maximum torque reaches 67 Nm (49.4 lb-ft) at 7,250 rpm, transferring power to the rear wheel through a 5-speed gearbox and belt final drive. With a specific output of 123.6 HP per liter and a 2,000 rpm working window between peak torque (7,250 rpm) and peak power (9,250 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the GV650 measures 217.7 kg (480 lbs) dry, translating to a power-to-weight ratio of 0.37 HP/kg (2.72 kg per horsepower). Rider ergonomics and chassis geometry center around a 706 mm (27.8 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,699 mm (66.9 in) wheelbase engineered for planted straight-line stability. The 15.9-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's ATK 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.
Specific Output
123.6 HP/L
Power-to-Weight
0.37 HP/kg (2.72 kg/HP)
Power Band Window
7,250–9,250 rpm
Standover Height
706 mm (27.8 in)
Engine
Displacement647.0 ccm (39.48 cubic inches)
Engine TypeV2, four-stroke
Engine Details90 degree V-twin
Power80.0 HP (58.4 kW)) @ 9250 RPM
Torque67.0 Nm (6.8 kgf-m or 49.4 ft.lbs) @ 7250 RPM
Compression11.6:1
Bore x Stroke81.5 x 62.0 mm (3.2 x 2.4 inches)
Valves/Cylinder4
Fuel SystemInjection. EFI
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
LubricationWet sump
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveBelt (final drive)
ClutchWet, Multiplate
Performance
ExhaustChrome
Chassis
Frame TypeSteel
Front SuspensionUpside down Telescopic (Compression, Rebound damping adjustable)
Rear SuspensionSwing arm with Hydraulic Double shock absorber (Preload adjustable)
Wheelbase1699 mm (66.9 inches)
Ground Clearance160 mm (6.3 inches)
Wheels & Brakes
Front Tyre120/70-ZR18
Rear Tyre180/55-ZR17
Front BrakesDouble disc. 2 pistons calipers, floating rotor
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.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
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.
