2009 BMW G 450 X Technical Analysis & Specification Breakdown
Engineered by BMW for the enduro - offroad motorcycle segment, the 2009 BMW G 450 X relies on a 449 cc (27.4 cu in) single cylinder, four-stroke powerplant. In factory specification, maximum torque reaches 42.8 Nm (31.6 lb-ft) at 6,500 rpm, transferring power to the rear wheel through chain final drive. Internal engine geometry specifies a bore and stroke of 98.0 x 59.6 mm (3.9 x 2.3 inches) with a 12.0:1 compression ratio.
On the scales, the G 450 X measures 121 kg (267 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 955 mm (37.6 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,475 mm (58.1 in) wheelbase engineered for balanced agility and highway composure. The 8-liter (2.1 US gal) fuel tank paired with a rated consumption of 6.6 L/100 km provides an estimated theoretical range of roughly 121 km (75 miles) between fill-ups, while factory top speed is listed at 145 km/h (90 mph).
Within MotoLibrary's BMW archive, this model family spans 4 indexed model years from 2008 to 2011, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Theoretical Range
~121 km (75 mi)
Engine
Displacement449.0 ccm (27.40 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Torque42.8 Nm (4.4 kgf-m or 31.6 ft.lbs) @ 6500 RPM
Compression12.0:1
Bore x Stroke98.0 x 59.6 mm (3.9 x 2.3 inches)
Valves/Cylinder2
Fuel SystemInjection. Electronic intake pipe injection / Keihin digital engine management with overrun fuel cut-off
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
Transmission
Final DriveChain (final drive)
ClutchMultiple-disc clutch in oil bath, mechanically operated; primary clutch (sits directly on the crankshaft)
Performance
Top Speed145.0 km/h (90.1 mph)
Fuel Consumption6.60 litres/100 km (15.2 km/l or 35.64 mpg)
Greenhouse Gases153.1 CO2 g/km. (CO2 - Carbon dioxide emission)
ExhaustClosed-loop 3-way catalytic converter
Chassis
Frame TypeBridge-type frame made of stainless steel tubing
Rake27.9°
Front SuspensionUpside-down front fork, rebound and compression damping adjustable
Front Travel260 mm (10.2 inches)
Rear SuspensionDual swing arm made of aluminum beams, Öhlins rear shock, compression + rebound damping and spring preload adjustable
Rear Travel220 mm (8.7 inches)
Wheelbase1475 mm (58.1 inches)
Wheels & Brakes
Front Tyre90/90-21
Rear Tyre140/80-18
Front BrakesSingle disc
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight111.0 kg (244.7 pounds)
Weight incl.121.0 kg (266.8 pounds)
Seat Height955 mm (37.6 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.
