2008 UM V2S-650R Technical Analysis & Specification Breakdown
Built around UM's sport motorcycle platform, the 2008 UM V2S-650R relies on a 647 cc (39.5 cu in) liquid-cooled v2, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 81.5 x 62.0 mm (3.2 x 2.4 inches) with a 11.5:1 compression ratio.
On the scales, the V2S-650R measures 208.7 kg (460 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 780 mm (30.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,435 mm (56.5 in) wheelbase engineered for balanced agility and highway composure. The 17.03-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's UM archive, this model family spans 4 indexed model years from 2007 to 2010, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
780 mm (30.7 in)
Engine
Displacement647.0 ccm (39.48 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Compression11.5:1
Bore x Stroke81.5 x 62.0 mm (3.2 x 2.4 inches)
Fuel SystemCarburettor. 2 x Mikuni, 38 mm
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionCDI
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMulti plate, wet manual clutch
Performance
Exhaust2 into 1 sport exhaust system tuned for mid range performance
Chassis
Front Suspension41mm inverted telescopic forks
Rear SuspensionSwingarm
Wheelbase1435 mm (56.5 inches)
Wheels & Brakes
Front Tyre120/60-ZR17
Rear Tyre160/60-ZR17
Front BrakesDouble disc
Rear BrakesSingle disc
Dimensions & Weight
Weight incl.208.7 kg (460.0 pounds)
Seat Height780 mm (30.7 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.
