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BMW Motorrad at the EICMA 2007. The new BMW G 450 X.

Over the last 80 years BMW Motorrad has made off-road history time and time again. The marque is now closely involved in off-road sports as never before and is premièring an uncompromising, pedigree sport enduro in the attractive displacement class of the 450 model series: The new BMW G 450 X.

G 450 X

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1. Concept, Requirements and Features.
2. Model Designation BMW G 450 X.
3. Development, Technology and Design.
4. Technical Data.

Over the last 80 years BMW Motorrad has made off-road history time
and time again. The marque is now closely involved in off-road sports as
never before and is premièring an uncompromising, pedigree sport enduro
in the attractive displacement class of the 450 model series: The new
BMW G 450 X - a motorcycle exclusively developed for the enduro sport
and the most demanding competitive races in the world. A machine that
is ready to compete the moment it arrives from the factory.

The background to the development of such a machine is the knowledge
that competition-oriented enduro motorcycles represent a parameter with
growth potential in the motorcycle market. Markets such as USA, Australia,
and also Spain, already register - nearly traditional - stable sales in the
off-road sector and BMW Motorrad wants to help shape and stimulate this
and other markets for the long term. Besides, smaller volume off-road
motorcycles open the gateway to both popular and professional motor sport
as well as offering enough potential to also help the young generation
to rediscover the fascination of motorcycles again. With the launch of the
G 450 X, BMW is also pointing the way for the upcoming generation
and towards sustainably securing the future of the motorcycle in general.
The engine with the latest fuel injection and computer-controlled three-way
catalytic converter is Euro III homologated and already meets the vehicle
emissions standards which are becoming ever more rigorous today for sports
events as well as for road vehicles. With these measures BMW Motorrad is
also taking a further step towards public acceptance of enduro sports in
future. The patented, unrivalled technical features of the new BMW G 450 X
make it a driving force and contribute to the advancement of technological
competition in this segment.

The introduction of the tough enduro BMW G 650 Xchallenge has already
pointed the way: with a frame and swing arm layout for improved offroad
traction, low weight, compact chassis, dynamic engine. BMW Motorrad goes
still further with the BMW G 450 X and is not content with constructional
features traditionally seen in the class. High-tech solutions have been realised
in both the engine and chassis in keeping with the cross-country sporting
tradition of the house and giving the marque a fascinating exclusive off-road
profile.

The concept of the BMW G 450 X is based on keeping the mass concentrated
as near as possible to the centre of gravity and realising a vehicle
configuration that adapts perfectly to the requirements of off-road sport.
The central element of this concept is the amalgamation of the bearing axle
of the rear-wheel swing arm with the axis of rotation for the driving pinion
so there is no change in length of the chain on compression and rebound,
minimizing the effects of the final drive on the vehicle's response. Further
consequences of this unequalled technical approach are a noticeably longer
swing arm for the same wheelbase as the competition and, with it, maximum
traction bringing concrete advantages in enduro sport with its extreme
demands on rider and machine.

Fundamental to the overall plan is the saving in length through the alliance
of the swinging bearing and pinion rotation axis. Not only does it enable
a longer swing arm, but the modern high-performance DOHC single-cylinder
engine with an output of 50 PS could also be positioned further to the rear.
The cylinder was more strongly tilted to the front, thus creating space for
long, straight intake tracts. In this way an ideal position was reached for the
fuel injection nozzle and dual throttle valve fuel injection system. This also
contributed to adapting the engine to meet the requirements of the Euro III
exhaust gas norm without loss of performance, which is anything but standard
in this motorcycle category. Further concept advantages include optimum
protection of the airbox and voluminous air flow due to its placement above
the motor in front of the seat. One consequence of the resolutely implemented,
centralised concentration of masses close to the centre of gravity
is the 7-litre tank (US version, 8l ECE version) under the seat. The filler
manifold is positioned below
an opening in the rear part of the seat. The reserve function is signaled by
a warning lamp in the cockpit.

The starter is placed in front of the engine; the battery is protected from dirt
and easily accessible directly behind the control head in the upper triangular
frame. The air filter is a square, flat wet element, fixed by a drawer mechanism
that makes it very easy, safe, clean and extremely fast to change. For this,
the right cosmetic tank cover (fixed with a quick-release fastener) is removed
and the air filter drawer is pulled out.The intake funnel is positioned at the
height of the control head whose high-lying position is advantageous in water
splashes or wherever there is
heavy dust development. The seat of the BMW G 450 X is made from a
piece of special foam plastic. Foregoing a cover and not having a substructure
or sump as its base brings weight advantages.

Another distinctive construction feature is the relocation of the clutch
directly
onto the crankshaft. A position that enabled an ingenious frame construction:
The frame tubes were placed straight ahead of the swing arm pivot, bringing
maximum stiffness at the same time as minimum weight and lowest use
of material. Further plus points of this overall arrangement resulted for the
cooler. This now had enough space to be realised in one piece. This saved
additional coolant hoses and and with a low weight, important for an off-road
motorcycle.

The development of the BMW G 450 X focusses on the ergonomic shape
and design of the active driving configuration. Starting from the steering
head to the rear section of the seat, the machine has an extremely slender
waistline exactly where the rider sits, offering maximum freedom of movement.
Especially in a standing position, the rider benefits because the
absence of the tank at this point provides unrestrained clearance and the
motorcycle can be kept appreciably slimmer.

In this configuration the G 450 X is the first BMW enduro to be uncompromisingly
developed for professional competitive racing. Like no other vehicle,
the advantages of the unique construction features are revealed to the full
in rugged off-road conditions; features such as the effective concentration of
the masses around the centre of gravity, the engine effects eliminated by
the unique swing arm mounting, the resulting low wear of chain and pinion,
the extreme handling reminiscent of a 250 series motocross motorcycle
with prodigious tracking stability, the low weight, the powerful engine and the
high-technology spring elements that offer the ambitious enduro sports
rider a number of package and design benefits in hard competition plus limitless
riding pleasure. Measured by the options it incorporates, the G 450 X
is the most powerful off-road BMW of all times for hard offroad riding.
A dedicated team of specialist engineers and mechanics, who have also
taken part in intensive off-road sport privately for many years, has developed
this new model for BMW Motorrad under the motto "from passionate
professionals for passionate professionals".

The BMW G 450 X continues the off-road expertise in the field of professional
enduro sport already consistently realised in the BMW G 650 Xchallenge.
It weighs about 40 kilogrammes less than the G 650 Xchallenge for roughly
the same output and, from the first draft to the last detail, is perfectly
tailored
to the requirements of the ambitious and success-oriented enduro sports
rider. As a completely special and absolutely exceptional motorcycle, the
BMW G 450 X is a genuine sports machine and it goes without saying that

it has all parts required for MOT approval as standard. This means that -
unlike other vehicles in this class - it's no problem to ride the BMW G 450 X
to the track on its own two wheels.The innovative, patented technology of the
single-cylinder sports enduro concept was put to the test in all relevant
highly-competitive events throughout
the 2007 season by experienced and successful racing professionals
such as Sascha Eckert, Simo Kirssi and Joël Smets who were able to
harmonise and further develop the concept. Today the motorcycle comes
ready for offroad racing and competitions at the highest level and with
approval for public road traffic without further modification straight from
the factory.

Thanks to great traction at low revs, smooth engine output and fast revving,
superior riding qualities with extremely light handling, best balance in slow
"trial" sections and enormous stability at higher speeds, as well as
professional
or well-versed enduro riders even enduro sport novices have no problem in
mastering this racing motorcycle.To corroborate the extremely sporty enduro
qualities, BMW Motorrad has a works racing team that already took part in
different Enduro sports events
with the G 450 X during the test phase and will continue to race it in the
Enduro world championship of the E2 class for example, or the German cross
country championship (GCC).

The worldwide market introduction of the BMW G 450 X is scheduled for
the middle of 2008.

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CO2 emission information.

The following applies to consumption figures for vehicles with new type approval, September 2017 onward: The figures for fuel consumption, CO2 emissions and energy consumption are obtained in accordance with the specified measuring procedure (EC Regulation No. 715/2007), as issued and amended. The figures are for a basic-version vehicle in Germany. The bandwidths allow for differences in the choice of wheel and tire sizes and items of optional equipment and can be changed by the configuration.

Obtained on the basis of the new "Worldwide harmonized Light vehicles Test Procedure" (WLTP), the figures are converted back to the "New European Driving Cycle" (NEDC) for the sake of comparability. Values other than those stated here may be used for the purposes of taxation and for other vehicle-related duties relating to CO2 emissions.

More information about official fuel consumption figures and the official specific CO2 emissions of new passenger cars can be obtained from the "guideline on fuel consumption, CO2 emissions and current consumption of new passenger cars", available here: https://www.dat.de/co2/.

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