Wolf BMW


BMW G650 Xchallenge: serious off-road adventure

I'll take mine on the rocks
The Xchallenge is an uncompromising offroad machine with long spring travel and not one gram of extra weight. The bodywork is made from flexible and fracture-proof plastic. There is a generous 270 mm (10.6 in) of suspension travel at both ends. The front end is handled by a USD fork with high torsional stiffness. The rear uses the BMW Motorrad Air Damping System (as used on the HP2 Enduro). This system is resistant to heat-induced fading and an air pump is provided to tune the ride height.

Picking a path Offroad, yes, but the Xchallenge is a fully legal and capable onroad bike, too. Top speed is over 100 mph, braking from the weight-saving Wave rotors is strong and fitted soft luggage is available. The fuel tank may seem small but the efficiency of this bike gives a cruising range of up to 250 km.

The G650 engine is a variant of the proven balance-shaft equipped single-cylinder F650 unit. Enhancements in the G engine make it even more responsive: lighter, faster-revving and more powerful. The optional 2-channel BMW Motorrad ABS system adds only 3.3 pounds of weight but adds immeasurably to rider safety and is switchable for extreme sporting needs.

The G-series bikes are built using the best available components and the Xchallenge is no exception: a strong upside-down fork with adjustable rebound and compression damping, Air Damping System fully adjustable rear shock, LED taillight, tapered aluminum handlebar and more.

STANDARD AND OPTIONAL EQUIPMENT

Brake hoses are teflon and braided stainless steel for greater sensitivity. The switchable 2-channel ABS (as seen on the R1200S) is a factory option.

Accesories to customize the Xchallenge include:
  • Titanium Sport muffler
  • Titanium exhaust pipes
  • Offroad headlight cover
  • Lower seat
  • Handlebar impact protector
  • Hand protectors
  • Luggage rack
  • Rear bag
  • Passenger footrests (forged aluminum)
  • Service toolkit
  • Support for BMW Navigator
 Getting there - or back

STANDARD AND OPTIONAL EQUIPMENT

TECHNICAL SPECIFICATIONS
Engine Top view
Type single-cylinder 4-stroke with balance shaft
Valves 4 valve per cylinder
Displacement 652 ccm
Bore x Stroke 100 x 83 mm
Horsepower 53 hp @ 7000 RPM
Torque 44 ft.lbs @ 5250 RPM
Compression ratio 11.5:1
Cooling system water
Valve actuation DOHC
Fuel induction BMS-C engine management, fuel injection
Catalytic converter 3-way closed-loop converter
Clutch multi-plate, wet
Gearbox 5-speed
Gear ratios Primary 1.95; I 2.75; II 1.75; III 1.31; IV 1.05; V .84
Final drive ratio 3.13:1
Electrical/electronic system
Ignition System individual integrated ignition coils
Generator 3-phase alternator, 280 W
Battery 12V / 10 Ah
Dimensions and Weights
Fuel tank capacity 9.5 litre
Seat height 930 mm (36.6 in); 910 (35.8 in) available
Dry weight 144 kg (317 lb)
Curb weight 156 kg (343 lb) with full fuel tank
GVWR 335 kg (737 lb)
Carrying capacity 179 kg (394 lb)
Performance and fuel consumption
Top Speed approx. 165 km/h (102 mph)
Acceleration 0-100 km/h (0-62 mph) 4.0s
Fuel consumption constant 90 km/h 3.6 l/100km (78.5 mpg Imperial)
Fuel consumption constant 120 km/h 5.1 l/100km (55.4 mpg Imperial)
Fuel requirements premium unleaded
Chassis
Frame aluminum/steel with engine as stressed member
Front wheel suspension USD 45 mm telescopic fork
Front suspension travel 270 mm
Rear wheel suspension aluminum double-sided swingarm
Rear suspension travel 270 mm
Final drive O-ring chain
Front brake 2-piston caliper, 300 mm disc
Rear brake floating single-piston caliper, 240 mm disc
Front wheel spoked wheel, 1.60 x 21
Front tire 90/90-21
Rear wheel spoked wheel, 2.50 x 18
Rear tire 140/80-18
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19 January 2007
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