2009 UM V2S-250R Technical Analysis & Specification Breakdown
Engineered by UM for the sport motorcycle segment, the 2009 UM V2S-250R relies on a 249 cc (15.2 cu in) oil & air-cooled v2, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 57.0 x 48.8 mm (2.2 x 1.9 inches) with a 10.4:1 compression ratio.
On the scales, the V2S-250R measures 176.9 kg (390 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 795 mm (31.3 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
795 mm (31.3 in)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Compression10.4:1
Bore x Stroke57.0 x 48.8 mm (2.2 x 1.9 inches)
Valves/Cylinder4
Fuel SystemCarburettor. 2 x Mikuni, 22 mm
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionCDI
LubricationWet sump forced lubrication
CoolingOil & air
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMulti plate, wet manual clutch
DrivelineRoller chain final drive
Chain Size520
Chassis
Frame TypePerimeter frame chassis
Front SuspensionHydraulic inverted telescopic forks
Rear SuspensionSingle shock, preload adjustment
Wheelbase1435 mm (56.5 inches)
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre150/70-17
Front Tire Pressure2.0 bar (29 psi)
Rear Tire Pressure2.2 bar (32 psi)
Front BrakesDouble disc
Rear BrakesSingle disc
WheelsCast aluminium alloy rims
Dimensions & Weight
Weight incl.176.9 kg (390.0 pounds)
Seat Height795 mm (31.3 inches) If adjustable, lowest setting.
Overall Height1090 mm (42.9 inches)
Overall Length2080 mm (81.9 inches)
Overall Width655 mm (25.8 inches)
Fuel Capacity17.03 litres (4.50 US gallons)
Oil Capacity1.80 litres (1.90 US quarts)
Service & Fluids
Engine OilSAE 10W-40 / 10W-50 Synthetic 4T (API SN / JASO MA2)
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.
