2009 BMW F 800 S/ST
BMW Motorrad’s F 800 Sports middleweight machines
are designed to offer serious fun to just about anyone
– from commuters to tourers and even those starting
out in biking. Having launched new generation contenders
in the superbike, enduro, touring and sports touring
categories, BMW Motorrad has turned its attention
to the sports middleweight class. The F800 features
a powerful, torque-rich 800 cc parallel-twin engine
(the first in BMW’s history), a new suspension
system and maintenance-free belt drive.
Previously BMW had a gap in its range between the
single-cylinder F 650 bikes and the 1200 cc Boxers
and four-cylinder motorcycles. This has now been filled
with the new F 800 S and ST models. The 798 cc twin-cylinder
machine is available in two versions – the sporty
half-faired F 800 S and the sports touring orientated
F 800 ST– both of which are designed to provide
a thrilling ride for novice riders and experienced
At the heart of these machines is an all-new 798
cc twin-cylinder engine that produces an impressive
85 hp and a punchy 63lb/ft of torque. A well-balanced
combination, enabling the rider to ‘surf’
the torque curve rather than constantly needing to
change up and down the gearbox. This is just one of
many factors that will endear the F 800 Series to
all types of rider.
The chassis is as impressive as the engine. Attached
to the rear of the aluminium frame is a single-sided
swing-arm while the front end uses conventional telescopic
forks in place of the Telelever suspension usually
fitted to BMWs. This all means a lighter, more straightforward
chassis design that will naturally appeal to those
more familiar with Japanese or Italian machinery.
The aim of producing a light responsive chassis has
worked well, as the F 800 S only weighs 182 kg dry
(187 kg for the ST version.)
To make F 800 S ownership as easy as the rest of
the BMW range (while keeping weight to a minimum)
the engineers have fitted a belt-drive system. This
is far more practical than chain drives common to
most bikes, negotiating he need for a chain’s
regular lubrication and adjustment. It is also lighter
than the shaft-drive BMW generally favours.
The F 800 S and ST are bold entries into the middleweight
category. They will raise the stakes in this important
class by matching their competitors abilities while
adding BMW quality, reliability and ingenuity. Competitively
priced, the F 800 S and ST motorcycles are in BMW
dealerships now and a special BMW Finance and Insurance
package is also available for both models.
Technical features and highlights
After a development period of just 47 months, the
new F 800 S sports middleweight, and the more touring-oriented
F 800 ST, now form BMW Motorrad’s fourth model
series. They also set the standard for more models
within the series and fill the gap in BMW’s
model line-up between the F650 singles and the Boxer-twin
The 798cc engine is a brand-new parallel-twin with
four-valve technology, developed by BMW Motorrad in
close cooperation with Austrian specialist Bombardier-Rotax
GmbH. The power unit is built in the Rotax plant according
to BMW standards and specifications, from where it
goes straight to BMW’s factory in Berlin for
The performance potential of this new model series
is impressive. The S-model, for example, accelerates
from 0 – 62 mph in just 3.5 seconds, offering
a high standard of engine flexibility at all engine
speeds. The slender, aerodynamic fairing works well
at high speeds, and combined with the bike’s
low dry weight makes an important contribution to
the F800’s dynamic performance.
The key to this low weight is consistent use of lightweight
technology, including an extremely stable aluminium
frame and aluminium single swinging arm.
Offering superior steering precision, the suspension
and running gear is designed for a high standard of
tracking stability and excellent handling. Other classic
BMW virtues such as rider and passenger comfort, and
exemplary safety features aim to redefine the standard
in the midrange motorcycle segment.
Both F800 models are available straight from the
factory with BMW Motorrad’s new, optional two-channel
ABS, in addition to a wide range of special equipment
Key features of the new F 800 S/ST
- Compact sports/sports touring machine with excellent
riding qualities and superior agility.
- Liquid-cooled 798cc parallel-twin, featuring
four-valve technology and unique mass compensation.
- Max output 85 hp at 8,000 rpm, max torque 86
Nm (63 lb-ft) at 5,800 rpm.
- DOHC follower valve drive as on the new K-generation.
- Intake manifold injection with electronic BMS-K
engine management, oxygen sensor, fully-controlled
three-way catalytic converter, and secondary air
- Close-ratio six-speed gearbox.
- Low-noise, long-life rear wheel belt drive.
- Torsionally stiff aluminium frame.
- Stable telescopic fork, outer tube diameter 43
millimetres or 16.9´´.
- Single swinging arm made of die-cast aluminium.
- Easy handling and superior steering precision.
- Dry weight/weight in road trim with full tank:
182/204 kg (S), 187/209 kg (ST).
- Superior seating comfort for both rider and passenger.
- Good protection from wind and weather, excellent
- Fuel tank located beneath the seat for a low
centre of gravity and with easily accessible filler
- High-performance brake system, as an option with
- Wide range of special equipment for the sports
and touring rider.
Like the new generation of K-engines, the parallel-twin
power unit also features two overhead camshafts driven
by a toothed chain and operating four valves per cylinder
via follower arms. Valve drive wear is reduced to
a minimum by the follower arms despite the large valve
lift, with frictional losses also being kept very
low and the entire drive system remaining sturdy and
stiff – even at high engine speeds. Valve play
only has to be checked after 12,000 miles at the very
Other features typical of BMW are the fuel supply
system featuring intake manifold injection with BMS-K
engine management and two throttle butterflies each
measuring 46 millimetres in diameter. The volume of
fuel injected is determined by the engine management
system not only as a function of the injection period,
but also in accordance with the pressure built up
by the fuel pump depending on the power and performance
required by the rider.
The entire fuel supply system operates without any
reflow, delivering only the amount actually needed
by the engine. Saving electric power, this fuel supply
control is able to vary fuel pressure over a wide
range in the interest of optimum fuel/air mixture
This unique principle has been patented by BMW Motorrad.
To precisely measure the amount of fuel injected,
the system considers not only the usual parameters
such as load, engine speed and temperature, but also
the residual oxygen content in the exhaust gas. The
information required for this purpose comes from an
oxygen sensor positioned behind the manifold joint
essential for a really effective conversion process
in the three-way catalytic converter.
The air required for the right fuel/air mixture formation
enters the intake air silencer through a funnel positioned
conveniently in the flow of cool air rushing by. This
favourable position above the engine as well as the
large size of the air supply funnel (in the interest
of superior torque) is made possible by moving the
tank beneath the seat.
The lightweight exhaust system is made of stainless
steel and is split up into two units at the end of
the manifold. A secondary air system enriches the
exhaust gas with fresh air – an afterburning
process in conjunction with the catalytic converter,
which reduces harmful emissions to a minimum.
Fast-revving and with lots of torque
As well as modern fuel injection making the parallel-twin
fully responsive to the rider’s commands; the
reduction of oscillation masses to a minimum also
plays a part in the interest of agile power and performance:
With a bore:stroke ratio of 82.0 : 75.6 mm, the four-valve
power unit revs quickly from low engine speeds, reaching
90 per cent of its maximum torque at just 5,000 rpm.
In the range from 5,000 to 8,000 rpm, the engine maintains
a very smooth and dynamic power curve accompanied
by a truly unique sound.
The BMW F 800 S accelerates to 62 mph in just 3.5
seconds and has a top speed of over 125 mph. However,
it’s not only the acceleration of the F800 models
that is impressive, but also their superior pulling
force at all speeds – quite simply because BMW’s
development engineers have focused in particular on
smooth rideability and superior power at medium engine
speeds, rather than extreme performance right at the
This is why the rider of an F 800 S will be thrilled
by the immediate response of the engine to the accelerator,
with the motorcycle accelerating quickly and powerfully
at all speeds. And at the same time the touring rider
will enjoy the high-torque in the ST version, without
having to shift gears too often.
BMW’s new parallel-twin not only bridges the
gap between dynamic acceleration and excellent agility,
but also proves that outstanding performance need
not be achieved at the price of high fuel consumption.
On country roads, for example, the rider can expect
a return of more than 56 miles per gallon. And on
request the F800 models may also be converted for
the use of regular unleaded fuel, albeit with a reduction
of maximum power by 2 hp and a slight increase in
fuel consumption. This modification is made possible
by activating a different control map in the engine
management software. This special programme in the
control unit may be subsequently reverted at any time.
Yet another sign of BMW Motorrad’s flexible
policy in accommodating customer wishes is the availability
of a low-output model developing 34 hp at 7,000 rpm
and 55 Nm (41 lb-ft) at 3,500 rpm. This reduction
of engine output, which comes as a no-cost option,
is ensured by a second throttle butterfly adjuster
(already featured in the production model) that limits
the opening angle on the throttle butterflies.
Further highlights in technology boasted by the
refined engine concept are the water pump to the right
of the cylinder head driven by a gearset on the camshaft.
Placed directly behind the radiator, the water pump
requires only very short coolant hoses, which helps
to keep the engine very compact.
An oil/water heat exchanger above the easily accessible
oil filter enables the power unit to warm up particularly
quickly when started cold, while at the same time
the heat exchanger limits the temperature of the engine
oil to a reasonable level.
Rear-wheel drive via high-technology toothed
The modern toothed drive belt first seen on the
F 650 CS has been carried over to the F 800 S after
having impressively proven its ease of maintenance
and reliability. On account of their higher loads,
the F 800 models feature a wider belt specially protected
by a cover on top – and as on the F 650 CS,
there is no need to re-tighten the belt or conduct
any special maintenance. The only requirement is to
check the belt after 600 miles and to verify its tension
every 6,000 miles during regular services. No lubrication
Should the toothed belt have to be re-tightened,
the entire operation is straightforward. Secondary
belt drive guarantees a smoother and softer load change,
sets off peak loads, and runs smoothly and quietly
even after substantial mile¬age. The rear belt
gear is made of matt stainless-steel plates, and interacts
with the four-piece damper integrated into the entire
system. This set-up efficiently eliminates any undesired
load change reaction and allows smooth acceleration
from even the lowest engine speeds.
Experience shows that the secondary drive system
in the F 800 is able to run smoothly and without the
slightest problem for a distance of over 25,000 miles,
again contributing to the low cost of ownership of
BMW's new F 800 models.
Engine and running gear – a perfect
Benefiting from the compact configuration of both
the engine and suspension, the F800 models have been
designed to set new standards in handling and tracking
stability. The extremely strong and torsionally rigid
aluminium frame (made of welded extrusion-pressed
profiles and die-cast components) ensures a direct
connection between the steering head and the pivot
point on the swinging arms.
To optimise both weight and dimensions, the engine
is integrated in the suspension as a load-bearing
element, the engine housing acting as the swinging
arm mount with a total of four needle bearings. Directly
above the swinging arm mount, the engine block is
bolted firmly onto the frame, and the rear frame section
made of steel piping is fastened to the aluminium
frame by four extra-sturdy bolts. The fuel tank is
positioned beneath the seat to lower the centre of
Compact sports/sports tourer with an extra-stable
Both F 800 models feature a stable telescopic fork.
Measuring 43 millimetres in diameter, the outer tubes
make a further contribution to the high standard of
flexural stiffness of the telescopic forks.
Stable wheel guidance and suspension of this calibre
not only benefits the machine’s tracking stability,
but also helps to optimise steering behaviour. Both
the F 800 S and the F 800 ST change direction smoothly
and precisely, always giving the rider a direct feeling
of the front wheel and its behaviour. The damper setting
and 140 millimetres of wheel travel help to ensure
superior riding comfort and security on the road.
A steering damper comes as standard.
The rear spring strut features adjustable damping
and preload. A special spanner that comes with the
bike serves to enlarge the hand-wheel’s grab
surface when required, enabling the rider to quickly
and easily adjust spring preload. Pivoted directly
on the single swing-arm made of die-cast aluminium,
the spring strut also
provides 140 millimetres of spring travel, contributing
both to riding comfort and the sporting possibilities
of the motorcycle.
The large, high-tech single swing-arm not only contributes
to the attractive looks of the machine, but also offers
a number of design benefits. For example, the silencer
is positioned on the left-hand side, running closely
along the motorcycle and highlighting its slender
silhouette. Further benefits are the excellent stiffness
of the entire structure as well as sophisticated detailed
solutions for superior ease of service and assembly.
Wheel design carried over from the K-model
While the F 800 S comes with the same wheel design
as the K 1200 S, the F 800 ST features wheels matched
in their design to those of the R 1200 ST sports tourer.
All of the cast aluminium wheels feature side-mounted
valves for easy and convenient tyre pressure control.
With their two 320 mm discs and four-piston brake
callipers on the front wheel, the new F-models boast
a brake system more suitable for a big bike than one
in the midrange segment. The brake callipers have
sintered metal brake pads and the main brake cylinder
comes with an adjustable lever and a separate brake
The rear brake system combines a single-piston floating
calliper with a single brake disc measuring 265 mm
in diameter. High-quality, steel-reinforced brake
lines (standard on both models) ensure a stable pressure
point the rider can easily feel for smooth and safe
Light and modern two-channel ABS
As an option the F 800 models are available straight
from the factory with Bosch two-channel ABS. Thanks
to the low weight of the motorcycle, this ABS brake
system (as on the single-cylinder model series) does
not require brake power assistance or an integral
This new generation of BMW Motorrad ABS not
only combines compact
dimensions with low weight, but also offers control
and braking quality enhanced to an even higher standard
over the previous generation. A direct comparison
shows that the size and weight of the pressure modulator
has almost been halved, with the weight of the ABS
system adding up to just 1.5 kilos.
The new pressure modulator masterminds optimum brake
pressure with ABS operating actively via intake valves
with linear control, ensuring very fast and fine control
intervals. The new valves with their infinitely variable
cross-sections also minimise the noticeable effect
of ABS for the rider, which is reduced to a mere pulse
feeling on the brake levers.
BMW’s new motorcycle ABS also offers an enhanced
range of diagnostic functions. Wheel speed sensors
automatically supervise the distance to the sensor
wheel and thus contribute to the system’s supreme
standard of all-round safety.
Electrical system with CAN-bus technology
The electrical system featured in the new F-models
also offers the highest standard of technology, featuring
a cutting-edge CAN-bus concept. And as in BMW’s
new K- and R-Series, the single-wire system (SWS)
offers numerous benefits, reducing both the number
and complexity of wires, networking all control units,
and thus facilitating a comprehensive process of diagnosis.
A further point is that this new technology no longer
requires conventional meltdown fuses, with the system
switching off the component involved automatically
in the event of malfunction.
An electronic immobiliser is standard. Starting the
engine therefore requires more than ‘just’
the right key profile. The chip integrated in the
key transmits the right code to the ring aerial in
the combined handlebar and ignition lock. Only when
this is done will the engine control unit enable the
rider to start the engine and set off. This technology
is currently the safest and most reliable way of protecting
a motorcycle from theft.
The electrical connectors are watertight and therefore
immune to any damage or interruption. A 14 Amp battery
and 400 W alternator, finally, ensure reliable supply
of electric power at all times.
Cockpit CD headlights
The cockpit with its analogue instruments gives
the rider all the information he needs instantly.
An on-board computer is also available as an option.
The asymmetric dual headlight gives the new models
in the F 800 range the well-known face of BMW's latest
generation of motorcycles. Two H7 headlight bulbs
ensure good visibility at all times for the rider
and other road users. When switching over to the high-beam
headlight, the low beam remains active, avoiding any
sudden decrease in light intensity that might disturb
New design concept for a particularly dynamic
Launching this new model series, BMW is introducing
a new and young design concept clearly linked in its
looks to BMW’s current four-cylinder models.
Through their design alone, the most outstanding technical
features are moved into the foreground as distinctive
BMW elements. The beautifully designed aluminium frame,
for example, connects the handlebar head and swing-arm
mounts in one direct line, forming a harmonious and
sophisticated unit together with the aesthetic single
swing-arm on the right-hand side.
While the F 800 S – with its low polycarbonate
windscreen and short upper fairing made of ABS plastic
– exudes a particularly sporting look, the F
800 ST (with its higher handlebar and windscreen)
clearly places the emphasis on its touring qualities.
Both F 800 models offer excellent aerodynamic qualities
and, despite their slender profile, provide a standard
of protection from wind and weather quite unparalleled
in the midrange segment. Special guidance of the air
flowing by the sides of the screen deflects the wind
around the rider for extra comfort, particularly on
the ST. And with its luggage bridge (featured as standard)
the ST offers all requirements for fitting the baggage
rack and support system.
A choice of colours not available on any other BMW
also serve to accentuate the special character of
these new models. The F 800 S enters the market in
Sunset yellow non-metallic or Flame Red non-metallic,
while the F 800 ST is available in either blue metallic
or Graphitane metallic.
Apart from their attractive looks, both models offer
a wide range of practical features. The mirrors, for
example, come with a special rest position enabling
the rider to quickly find his perfect setting after
folding them back. The various fairing sections can
be quickly removed for maintenance and service, while
the lockable tank cap on the right-hand side leading
to the 16-litre fuel tank is always within easy reach.
This is good news above all for the touring rider,
who no longer has to worry about removing his tank
bag when filling up.
Seating comfort typical of BMW
The F 800 model series also offers the very best
when it comes to seating comfort. An important factor
is that even the relatively short rider (170 centimetres
or 5´ 5´´ in height) is easily able
to reach the ground despite a seat height of 820 mm
(32.3´´). And the short¬er rider is
able to opt for an even lower seat (790 mm or 31.1´´)
straight from the factory. One of the reasons why
the rider is easily able to reach the ground with
his feet is that the seat has a particularly slender
waistline at the front.
The flatter handlebar on the F 800 S allows the sporting
rider to lean further forwards than on the ST. And
although the two short handles on the S-model are
mounted separately to avoid vibration, this does not
impair steering precision. Hand levers for the brakes
and clutch are also adjustable for span.
Range of equipment
Optional extras and special equipment
BMW Motorrad enables the discerning rider to customise
his or her motorcycle not only with optional extras
fitted from the factory but also special equipment
retrofitted either by the dealer or the customer himself.
Factory fit options
- Heated Grips* £ 195.00
- ABS £ 510.00
- On-board Computer £ 135.00
- White Indicator Lenses £ 25.00
- Anti-Theft Alarm System £ 135.00
- Power Reduction to 25kW/34 hp No Cost
- Riders low Seat (790mm)* No Cost
- White Indicator Lenses* £ 25.00
- Main Centre Stand* £ 75.00
- L & R Pannier Fastenings (ST only) £
- Tyre Pressure Control £ 155.00
Products marked with an * are also available as special
equipment from BMW motorcycle dealers.
The on-board computer adds a number of important
details to the information provided by the easy-to-read
display in the instrument cluster. This includes the
level of fuel and gear selected; coolant temperature;
average speed; average fuel consumption; current fuel
consumption; the range remaining on the fuel in the
tank; outside temperature; and a stopwatch function.
All the rider has to do to retrieve the information
desired is press a button on the left handle and select
the specific item. This is also where he controls
and operates the stopwatch.
A further feature – which may be deactivated
if required – is the bright
LED telltale, warning the rider as soon as he reaches
the engine speed limit marked red.
Anti-theft warning system
Once activated, the anti-theft warning system responds
to any change in the position of the motorcycle when
parked by setting off very clear optical and very
loud acoustic alarms. Highly effective in safeguarding
the motorcycle, the electronic warning signal is deactivated
either by remote control or by the ignition key.
- Heated grips*
- Luggage rack
- Sports cases (installation kit)
- Case supports (installation kit, only in conjunction
with luggage bridge on the S-model)
- Sports cases with variable capacity
- Topcase, small
- Tank rucksack
- Main stand* (with installation kit for the S-model)
- Paddock stand with adapter
- Service toolkit
- Low seat*
- White direction indicators*
- Cable for helmet holder.
- BMW Motorrad Navigator
- Navigator holder, cables and installation kit
- Passenger seat cover
- High and low windscreen
Products marked with an * are also available straight
from the factory.
Lots of storage space in sports cases and
The sports cases (variable in capacity from 17–25
litres and already featured on the K1200 S) have been
specially modified at the bottom to fit perfectly
on the F800. And thanks to the very inconspicuous
carrier system, the cases with their dynamic and sporting
look can be fitted and removed within a matter of
seconds. Watertight interior bags are integrated as
standard in the sports cases. For even more luggage
capacity, the rider can also opt for the 28-litre
topcase, which is large enough to stow a helmet.
Paddock stand and passenger seat cowl
The sports rider will be thrilled by the paddock
stand for quickly changing tyres and by the passenger
seat cover. Once fitted at the rear, the passenger
seat cowl gives the motorcycle an even more sporting
Retrofittable main stand
In addition to the side stand featured as standard,
both the F 800 S and the F 800 ST may be fitted with
a main stand.
Tank rucksack and tankbag
Both the tank rucksack and the tankbag are highly
practical companions, particularly as they do not
have to be removed when refuelling.
Offering 12-litres capacity and featuring a watertight,
lockable inner bag, the tankbag is also a perfect
match for the BMW Motorrad Navigator GPS system. The
much larger tank rucksack offers ample capacity variable
from 14–26 litres and also comes with a watertight
inner bag, meaning that there is no need for an additional
cover when riding in the rain. Further features are
a watertight pocket for maps and a smaller pocket
for odds and ends accessible via the main pocket from
New colour for 2009:
- Night Blue Metallic
- Champagne Metallic
- Capacity cc - 798
- Bore/stroke mm - 82/75.6
- Output kW/bhp - 62.5/85 25/34 at engine speed
min–1 8,000 7,000
- Torque Nm - 86 55 at engine speed min–1
- No. of cylinders - 2
- Compression/fuel - 12.0 : 1/premium unleaded
- Valve/gas control - DOHC (double overhead camshaft)
- Valves per cylinder - 4
- Ø intake/outlet mm - 32/27.5
- Throttle valve diameter mm - 46
- Carburetion - Electronic intake pipe injection,
BMS-K engine management
- Alternator W - 400
- Battery V/Ah - 12/14
- Headlamp W - 55 (high/low beam)
- 5 parking light
- 21/5 (brake/rear light)
- Starter kW - 0.9
- Clutch - Multi-plate clutch in oil bath, mechanically
- Gearbox - Constant mesh 6-speed transmission
- Primary ratio - 1 : 1.930
- Gear ratio steps - I; 1 : 2.462, II; 1 : 1.750,
III; 1 : 1.381, IV; 1 : 1.174, V; 1 : 1.042, IV;
1 : 0.960
- Rear-wheel drive - Toothed belt drive, 173 teeth
- 11-1903-34 (spacing/length/width)
- Transmission ratio - 1 : 2.353 (34/80)
- Frame - type Bridge frame made of aluminium profiles,
- Wheel control, front; Telescopic fork, stanchion
diameter 43 mm
- Wheel control, rear; Aluminium single-sided swing
- Spring travel, front/rear mm - 140/140
- Wheel castor offset mm - 94.6
- Wheelbase mm - 1,466
- Steering head angle ° - 63.8
- Brakes - front; Double disc brake Ø 320
- rear; Single disc brake Ø 265 mm
- BMW Motorrad ABS on request
- Wheels - Cast aluminium wheel
- front; 3.5 x 17
- rear; 5.5 x 17
- Tyres - front; 120/70-ZR17
- rear; 180/55-ZR17
Dimensions and weights
- Total length mm - 2,082/2,195
- Total length incl. mirrors mm - 860
- Total width not incl. mirrors mm - 738/797
- Seat height mm - 820 (SA 790)
- Dry weight kg - 182/187
- DIN unladen weight, road ready kg - 204/209
- Maximum authorised weight kg - 405
- Fuel tank capacity l - 16
- Fuel consumption - 56mph, mpg 60.0, 75mph, mpg
- Acceleration - 0–62mph s - 3.5/3.7
- Maximum speed mph - over 125, no details available