The 1981 BMW R100CS is a testament to the marque’s commitment to simplicity, weight, and performance. This 980cc opposed Twin boasts a rich history, retaining the original concept of the BMW engine layout since 1923, while refining and honing the design and execution over the years.
With its Bing 94/40/111-112 constant depression carburetors, the R100CS delivers a distinctive engine character, providing a unique riding experience that sets it apart from its peers. The shaft-driven, ohv powertrain is a masterclass in engineering, delivering a smooth, linear power delivery that is both accessible and exhilarating.
Whether carving through twisties or cruising down the highway, the R100CS’s lightweight construction – weighing in at a mere 455 pounds with half a tank of gas – makes it an absolute delight to ride. And with a price tag of $6,600, this BMW is a true bargain for those seeking a premium motorcycle experience without the premium price tag. The BMW R100CS is a true trend-setter, a motorcycle that has been ahead of its time since its inception, and remains an iconic symbol of motorcycling excellence.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Engine Capacity
980 cc / 59.8 cu in.
Max Power
51 kw / 70 hp
Max Torque
76 Nm / 7.75 kgf-m / 56 ft-lb @ 6000 rpm
Top Speed
Fuel Tank Capacity
24 L / 6.3 US gal
Weight (Wet/Kerb)
484 lbs / 220 kg
Seat Height
32.3 inches / 820 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 100CS
Year
1983 – 84
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
The BMW R 80RT, a tourer designed for the UK market, brings the dream of a grand adventure within reach of a wider audience. With a 800cc engine, this bike packs a punch, delivering a unique riding experience that’s both thrilling and comfortable.
The R 80RT’s engine is the heart of the machine, and its character is unmistakable. It’s a boxer twin that purrs and growls, its power delivery smooth and linear. The bike’s handling is agile and responsive, making it a joy to ride on twisty roads and motorways alike.
Our test bike, fresh from BMW’s Munich HQ, looked every inch the part, its sleek fairing and lightweight construction making it a head-turner. The RT fairing, a classic design that has stood the test of time, provides all the protection and comfort you need for long-distance touring. And with its adjustable screen, you can tailor the riding experience to suit your needs.
As I embarked on a 750-mile journey, I found the bike’s fairing to be a mixed blessing – but one that I grew to appreciate. It’s a bike that’s designed for the long haul, and with its comfortable seat, spacious luggage capacity, and robust engine, it’s the perfect companion for any adventure. With its affordable price tag and impressive capabilities, the BMW R 80RT is a tourer that’s hard to resist, and it’s one that I’m confident will leave a lasting impression on any rider who’s lucky enough to own one.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Engine Capacity
797.5 cc / 48.7 cu in.
Max Power
36.4 kw / 50 hp
Max Torque
58 Nm / 5.9 kgf-m / 42 ft/lb @ 4000 rpm
Top Speed
Fuel Tank Capacity
5.0 US gallons / 19.0 L
Weight (Wet/Kerb)
Seat Height
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 80RT
Year
1981
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Imagine cruising along a winding greenlane, the forest air filled with the scent of leaves, as the sun casts dappled shadows on the ground below. Suddenly, a rugged enduro bike comes into view, its distinctive front mudguard and upswept exhaust announcing its off-road credentials. This is the BMW R 80G/S, a trailblazer that defies the stereotype of the traditional BMW as a pure roadster.
Built on a lightweight R65 chassis, the R 80G/S boasts a reduced dry weight of just 3701b, making it an agile and responsive ride. The clutch housing has also been optimized, with smaller flywheels that retain the same contact area, ensuring seamless gear shifting. But the true innovation lies in BMW’s pioneering Monolever system, a single driveshaft/suspension strut that provides near 7in of movement, making it the ultimate off-road companion.
As you ride the R 80G/S, you’ll be struck by its exceptional handling and stability, whether on rough trails or smooth roads. With its high bars, chunky tyres, and laid-down rear suspension, this bike is tailor-made for adventure seekers who crave the freedom to explore the great outdoors. The R 80G/S is not just a motorcycle – it’s an invitation to experience the thrill of the unknown, with BMW’s legendary quality and reliability guaranteeing a journey to remember forever.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Engine Capacity
797.5 cc / 48.7 cu in.
Max Power
37 kw / 50 hp
Max Torque
56.7 Nm / 5.8 kgf-m / 41 ft lb @ 5000 rpm
Top Speed
Fuel Tank Capacity
19.5 L / 5.1 US gal
Weight (Wet/Kerb)
409 lbs / 186 kg
Seat Height
33.9 inches / 860 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 80G/S
Year
1981
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
The BMW R 65LS is a testament to the marque’s commitment to innovation and refinement. Born in 1981, this 650cc horizontally opposed twin is an enlarged version of the R60, with its motor’s basic design dating back to 1923. With its four-speed gearbox, hydraulically damped forks, and unit construction, the R 65LS embodies BMW’s pioneering spirit.
The engine’s character is defined by its smooth, linear power delivery, making it an ideal companion for both city streets and winding roads. The R 65LS’s riding experience is one of balance and poise, with its 650cc motor providing ample torque for effortless cruising.
As a scaled-down version of the R90/S, the R 65LS brings a more accessible, yet still premium, riding experience to the market. With its sleek design and robust performance, it’s little wonder that the R 65LS has become a beloved classic among motorcycle enthusiasts, and its enduring appeal is a testament to BMW’s dedication to building machines that inspire and delight.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder
Engine Capacity
39.6 cubic inches / 649.6 cc
Max Power
45 hp / 32.8 kw @ 7250 rpm
Max Torque
45 Nm / 4.6 kgf-m / 33.2 lb-ft @ 6000 rpm
Top Speed
Fuel Tank Capacity
5.8 US gallons / 22.0 L
Weight (Wet/Kerb)
465 lbs / 207 kg
Seat Height
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 65LS
Year
1981
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder
Displacement
39.6 cubic inches / 649.6 cc
Bore x Stroke
82 x 61.5 mm
Compression Ratio
9.2:1
Number of Cylinders
Max Horsepower
45 hp / 32.8 kw @ 7250 rpm
Max Torque
45 Nm / 4.6 kgf-m / 33.2 lb-ft @ 6000 rpm
Valve Train
Valves per Cylinder
Ø intake / exhaust valve dia
Ø throttle valve
Engine Management System
2 x Bing constant depression carburetors
Fuel-mixture System
Lubrication System
Cooling System
Air cooled
Ignition System
Fuel
Exhaust
Emissions Compliance
Performance
Top Speed
n/a
Acceleration (0-100 km/h, 0-60 mph)
Fuel Consumption
Range
*n/a – information not provided by manufacturer
Transmission
Clutch
Gearbox
5 Speed
Primary Drive Ratio
Secondary Drive Ratio
Gear Ratios
Final Drive
Shaft
Quick Shifter
Traction Control System
Assist & Slipper Clutch
Electrical & Electronics System
Battery
Alternator/Generator
Starter
Electric
Headlight Type
Taillight Type
Instrumentation
Connectivity
Riding Modes
Traction Control System
Launch Control
ABS
Cruise Control
Chassis & Suspension
Frame Type
Front Suspension
Telescopic hydraulic forks
Front Suspension Travel
6.9 inches / 175 mm
Rear Suspension
Long swinging arm with adjustable strut
Rear Suspension Travel
4.3 inches / 110 mm
Rake
Trail
Rear Subframe
Swingarm
Handlebar
Steering Damper
Wheels & Brakes
Wheels
Front Wheel/Rim Size
Front Tire Size
3.25 – S18
Rear Wheel/Rim Size
Rear Tire Size
4.00 -S18
Front Brakes
2 x 260mm discs, 2 piston calipers
Rear Brakes
Single 200mm disc, 1 piston caliper
ABS
Dimension & Weights
Overall Length
Overall Width
Overall Height
Seat Height
Wheelbase
Ground Clearance
Fuel Tank Capacity
5.8 US gallons / 22.0 L
Wet (kerb/curb) Weight
465 lbs / 207 kg
Dry Weight
Max Load Capacity
Features
650cc horizontally opposed twin engine
82mm bore
61mm stroke
Overhead valves per cylinder
Fuel and air mixture is compressed 8.2 times
Large pistons for strong bottom power
7600 rpm redline
40 ponies of power at the rear wheel
Two-into-two exhaust setup
Balance tube between pipes
Five-speed transmission
Dry clutch
Hydraulic damped telescopic forks
Unit construction of motor and gearbox
Encased transmission and motor housing
Four-speed gearbox (mentioned as a BMW pioneering feature, but not specific to the R65LS)
Modern body work and paint scheme (similar to the R90/S)
The BMW R 80/7 is a motorcycle that embodies the perfect blend of heritage and innovation. Introduced in 1981, this model marked a significant shift in BMW’s design philosophy, with a focus on comfort, agility, and performance. The R 80/7’s 797cc boxer twin engine produces a smooth and refined power delivery, making it an ideal choice for long-distance touring or daily commutes.
Its robust engine character is complemented by a low-maintenance design, ensuring that riders can enjoy the freedom of the open road with minimal fuss. The R 80/7’s suspension and braking system are finely tuned to provide a responsive and confidence-inspiring ride, making it an excellent choice for both beginners and experienced motorcyclists.
The BMW R 80/7 is a testament to the company’s commitment to building motorcycles that are both functional and enjoyable to ride. Its unique blend of heritage and innovation makes it a standout model in its class, offering riders a truly authentic riding experience that is both exhilarating and rewarding.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Engine Capacity
797.5 cc / 48.7 cu in.
Max Power
50 hp / 36.4 KW @ 6500 rpm
Max Torque
58Nm / 5.9 kgf-m / 42 ft lb @ 5500 rpm
Top Speed
Fuel Tank Capacity
22 Litres / 5.8 gal
Weight (Wet/Kerb)
462 lbs / 210 kg
Seat Height
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 80/7
Year
1981 – 83
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
The BMW R100RT is a testament to the marque’s unwavering commitment to excellence. Powered by a robust 980cc twin-cylinder engine, this touring motorcycle boasts a unique character that is both forthright and manageable. The R100RT’s exceptional handling is a direct result of BMW’s renowned attention to detail and its long-standing emphasis on function over form. With its impressive 8 inches of front fork travel and constant depression carburetors, this bike is designed to conquer the open road with ease. Whether navigating twisty mountain passes or cruising down the highway, the R100RT’s riding experience is one of refinement and sophistication. And with its unparalleled manufacturing quality, resale value, and passive haughtiness, the BMW R100RT is the epitome of a superior motorcycle.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Engine Capacity
980 cc 59.8 cu in
Max Power
51 kW 70 hp @ 7000 rpm
Max Torque
76 Nm / 7.7 kgf-m / 56 ft-lb @ 6000 rpm
Top Speed
Fuel Tank Capacity
6.3 US gallons / 24.0 L
Weight (Wet/Kerb)
525 lbs / 238 kg
Seat Height
32.3 inches / 820 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 100RT
Year
1982 – 83
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Displacement
980 cc 59.8 cu in
Bore x Stroke
94 x 70.6 mm
Compression Ratio
9.5:1
Number of Cylinders
Max Horsepower
51 kW 70 hp @ 7000 rpm
Max Torque
76 Nm / 7.7 kgf-m / 56 ft-lb @ 6000 rpm
Valve Train
Valves per Cylinder
Ø intake / exhaust valve dia
Ø throttle valve
Engine Management System
2 x Constant depression carburettors, Bing 94/40/105 – 94/40/106
The BMW R100CS is a testament to the marque’s commitment to tradition and innovation. This 980cc opposed Twin engine, with its two constant depression carburetors and push-rods, retains the original concept of the marque that dates back to 1923. The engine’s character is a perfect blend of low-end torque and mid-range punch, making it an absolute joy to ride. With a claimed 70 horsepower and 60 lb-ft of torque, the R100CS is a force to be reckoned with on the twisties. Its lightweight chassis, weighing in at a mere 455 pounds with half a tank of gas, makes it a handling gem.
Riding the R100CS is an experience unlike any other. The low bars and semi-rearset pegs put the rider in a sporty, aggressive position, while the bikini fairing provides just the right amount of wind protection. The result is a bike that’s as at home on a mountain pass as it is on a Sunday afternoon cruise. With its rich history, impressive performance, and timeless design, the BMW R100CS is a true classic that continues to set the standard for motorcycles around the world. It is, without a doubt, one of the greatest motorcycles ever made.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Engine Capacity
980 cc / 59.8 cu in.
Max Power
51 kw / 70 hp
Max Torque
76 Nm / 7.75 kgf-m / 56 ft-lb @ 6000 rpm
Top Speed
Fuel Tank Capacity
24 L / 6.3 US gal
Weight (Wet/Kerb)
484 lbs / 220 kg
Seat Height
32.3 inches / 820 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 100CS
Year
1981 – 82
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
The BMW R 100, a motorcycle of unyielding character, where power and finesse converge in perfect harmony. The 980cc boxer twin engine, paired with Bing V 94/40/111 and V 94/40/112 constant depression carburetors, delivers a seamless and responsive ride. With its robust torque curve, the R 100 effortlessly accelerates through the gears, its smooth engine note a testament to BMW’s renowned engineering prowess.
Its 80 horsepower and 68 ft-lb of torque create an engaging riding experience, inviting the rider to explore the limits of the machine. The BMW R 100 is a motorcycle that rewards skill and finesse, its character and handling making it an exceptional choice for those seeking a truly immersive riding experience.
Whether carving through twisties or cruising down the highway, the BMW R 100 delivers a riding experience that is at once thrilling and effortless, its engine character a true reflection of the BMW philosophy: “Ride for the sake of riding.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Engine Capacity
980 cc / 59.8 cu in.
Max Power
48.8 kw / 66.6 hp
Max Torque
72 Nm / 7.34 kgf-m / 53.1 lb-ft @ 5500 rpm
Top Speed
Fuel Tank Capacity
24 L / 6.3 US gal
Weight (Wet/Kerb)
480 lbs / 218 kg
Seat Height
32.3 inches / 820 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 100
Year
1980-81
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Displacement
980 cc / 59.8 cu in.
Bore x Stroke
94 x 70.6 mm
Compression Ratio
8.2:1
Number of Cylinders
Max Horsepower
48.8 kw / 66.6 hp
Max Torque
72 Nm / 7.34 kgf-m / 53.1 lb-ft @ 5500 rpm
Valve Train
Valves per Cylinder
Ø intake / exhaust valve dia
Ø throttle valve
Engine Management System
2 x constant depression carburetors, Bing V 94/40/111 – 94/40/112
The BMW R 80G/S Dakar – a testament to the brand’s unwavering commitment to off-road excellence.
In 1980, BMW unveiled the R 80G/S, a behemoth of a motorcycle that would dominate the world of enduro racing. Its robust 1,000cc two-cylinder engine provided effortless power, while its low center of gravity and shaft drive ensured stability and ease of maintenance. The innovative BMW Monolever single swinging arm on the rear wheel revolutionized suspension technology, allowing riders to tackle even the most treacherous terrain with confidence.
For many, the R 80G/S was more than just a motorcycle – it was a trusted companion for long-distance adventures on rough terrain. Its reputation was cemented by the success of BMW’s Works Team in the Dakar Rally, with Hubert Auriol’s 1981 victory marking the beginning of a dynasty of championship wins.
Riding the R 80G/S was an experience unlike any other – its raw power, agility, and reliability made it an absolute thrill to ride, whether on the open road or in the unforgiving deserts of the Dakar Rally. It was a true icon of its time, and its influence can still be felt in modern motorcycles today. The BMW R 80G/S Dakar – a true legend that will forever be etched in the annals of motorcycling history.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Engine Capacity
798 cc / 48.7 cu in
Max Power
41 kw / 55 hp
Max Torque
Top Speed
Fuel Tank Capacity
38 L / 10 US gal
Weight (Wet/Kerb)
Seat Height
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 80G/S Dakar (GS80R-GS980R)
Year
1980(prepared by HPN)
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Displacement
798 cc / 48.7 cu in
Bore x Stroke
84.8 x 70.6 mm
Compression Ratio
9.3:1
Number of Cylinders
Max Horsepower
41 kw / 55 hp
Max Torque
Valve Train
Valves per Cylinder
Ø intake / exhaust valve dia
Ø throttle valve
Engine Management System
Fuel-mixture System
Lubrication System
Cooling System
Air cooled
Ignition System
Fuel
Exhaust
Emissions Compliance
Performance
Top Speed
n/a
Acceleration (0-100 km/h, 0-60 mph)
Fuel Consumption
Range
*n/a – information not provided by manufacturer
Transmission
Clutch
Gearbox
5 Speed
Primary Drive Ratio
Secondary Drive Ratio
Gear Ratios
Final Drive
Quick Shifter
Traction Control System
Assist & Slipper Clutch
Electrical & Electronics System
Battery
Alternator/Generator
Starter
Electric & Kick
Headlight Type
Taillight Type
Instrumentation
Connectivity
Riding Modes
Traction Control System
Launch Control
ABS
Cruise Control
Chassis & Suspension
Frame Type
Front Suspension
Maico fork
Front Suspension Travel
Rear Suspension
Bielstein shocks 170mm wheel travel
Rear Suspension Travel
170 mm / 6.7″
Rake
Trail
Rear Subframe
Swingarm
Handlebar
Steering Damper
Wheels & Brakes
Wheels
Front Wheel/Rim Size
Front Tire Size
3.50 – 21″
Rear Wheel/Rim Size
Rear Tire Size
4.50 -18″
Front Brakes
∅160mm Disc
Rear Brakes
∅160mm Drum
ABS
Dimension & Weights
Overall Length
Overall Width
Overall Height
Seat Height
Wheelbase
Ground Clearance
Fuel Tank Capacity
38 L / 10 US gal
Wet (kerb/curb) Weight
Dry Weight
160 kg / 353 lbs
Max Load Capacity
Features
Monolever single swinging arm on the rear wheel
Suitable for both road use and off-road terrain
Large-displacement touring enduro
Reliable cooling system
Low centre of gravity
Shaft drive for ease of maintenance
1000-cc two-cylinder engine
Based on series models
Single swinging arm on the rear wheel
Successful in the Paris-Dakar rally
Won the motorcycle category in 1981, 1983, and 1984-1985
BMW’s latest masterpiece, the R80 G/S, is a revelation in the world of motorcycling. The company’s president, Dr. Eberhard Sarfert, and vice-president, Karl Gerlinger, unveiled the bike in Avignon, France, amidst a gathering of 30 international journalists. Initially, the G/S’s weight and boxer engine design may seem unconventional, but this is where its true strengths lie.
The R80 G/S is not a lightweight enduro, but a machine designed specifically for long-distance touring and off-road excursions. BMW recognized a gap in the market for a dual-purpose bike that could seamlessly transition from pavement to dirt, and they’ve filled it with the G/S. With its 400-pound weight and robust engine, this bike is built for the rigors of cross-country travel.
In our first ride, the R80 G/S proved to be a capable and comfortable companion for both on- and off-road adventures. Its boxer engine provides a unique character, while its design and features ensure a stable and controlled ride. Whether navigating twisty roads or tackling challenging terrain, the G/S delivers. With its innovative design and exceptional capabilities, the BMW R80 G/S is poised to revolutionize the world of motorcycling.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Engine Capacity
797.5 cc / 48.7 cu in.
Max Power
37 kw / 50 hp
Max Torque
56.7 Nm / 5.8 kgf-m / 41 ft lb @ 5000 rpm
Top Speed
Fuel Tank Capacity
19.5 L / 5.1 US gal
Weight (Wet/Kerb)
409 lbs / 186 kg
Seat Height
33.9 inches / 860 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 80G/S
Year
1980
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
