The BMW R 45: a compact, yet potent addition to the BMW family. Its oversquare engine, featuring a fiat-twin configuration with pushrods and rockers, delivers a smooth and efficient ride.
Two stages of tune are available, producing 26bhp for the German market and 35bhp for the rest of the world. The export version boasts a peak power of 7250rpm and maximum torque of 27.51 ft-lbs at 5500rpm.
The R 45’s performance may not be its strongest suit, but it will reach a top speed of approximately 95mph. In contrast, its fuel efficiency is impressive, with an average of 55-60mpg achievable. The bike’s 4.8-gallon fuel tank and five-speed gearbox with shaft drive make it well-suited for touring. Standard features include cast-alloy wheels, audible warnings for the indicators, twin mirrors, electric starter, and a plug for an intercom device. The R 45’s exceptional finish comes at a price, however, with the smallest BMW produced being more expensive than many 750s.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Engine Capacity
453 cc / 27.6 cu in.
Max Power
20 kw / 27 hp
Max Torque
37.5 Nm / 3.82 kgf-m / 27.65 lb-ft @ 5000 rpm
Top Speed
Fuel Tank Capacity
5.8 US gallons / 22.0 L
Weight (Wet/Kerb)
Seat Height
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 45
Year
1978 – 79
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Displacement
453 cc / 27.6 cu in.
Bore x Stroke
70 x 61.5 mm
Compression Ratio
9.2:1
Number of Cylinders
Max Horsepower
20 kw / 27 hp
Max Torque
37.5 Nm / 3.82 kgf-m / 27.65 lb-ft @ 5000 rpm
Valve Train
Valves per Cylinder
Ø intake / exhaust valve dia
Ø throttle valve
Engine Management System
2 x Bing V65 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
Kick
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
175 mm / 6.9″
Rear Suspension
Long swinging arm with adjustable strut
Rear Suspension Travel
Rake
Trail
Rear Subframe
Swingarm
Handlebar
Steering Damper
Wheels & Brakes
Wheels
Front Wheel/Rim Size
Front Tire Size
1.85 – B18
Rear Wheel/Rim Size
Rear Tire Size
2.50 – B18
Front Brakes
2 x 260mm Disc, 2 piston caliper.
Rear Brakes
Single 200mm drum
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
Dry Weight
185 kg / 408 lbs
Max Load Capacity
Features
Oversquare engine
26bhp for the German market, 35bhp for the rest of the world
The 1978 BMW R 100T is a true icon of the motorcycle world. This air-cooled, four-stroke, two-cylinder horizontally opposed Boxer engine is a masterclass in simplicity and elegance. With two valves per cylinder, it produces a distinctive sound and feel that’s impossible to replicate with more complex designs.
Its horizontally opposed configuration provides a low center of gravity, making it incredibly stable and planted on the road. The result is a riding experience that’s both refined and exhilarating, with a sense of connection to the machine that’s hard to find in modern bikes.
Whether you’re cruising down the highway or carving through twisties, the BMW R 100T is a joy to ride, its smooth power delivery and effortless handling making it a true classic.
Key Specifications
Engine Type
Air cooled, 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
77 Nm / 7.85 kgf-m / 56.8 lb-ft @ 5500 rpm
Top Speed
Fuel Tank Capacity
6.3 US gallons / 24.0 L
Weight (Wet/Kerb)
Seat Height
31.9 inches / 810 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 100T
Year
1978
Engine
Engine Type
Air cooled, four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder.
The BMW R 100S – a testament to the marque’s enduring formula for performance. By increasing cylinder bore diameter to 94mm, BMW’s engineers have coaxed a respectable 980cc from the familiar horizontally-opposed twin. The result is a potent engine that combines the quiet, comfortable ride of its predecessors with a welcome dash of sporting character. The Bing constant depression carburettors, a hallmark of BMW’s engine design, deliver crisp throttle response and a linear power curve. Whether cruising the twisties or carving up the canyon roads, the R 100S is a masterclass in understated sophistication, with its smooth, progressive power delivery and reassuring weight distribution making it a joy to ride. It’s a bike that will leave you beaming with satisfaction.
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 / 7.7 kgf-m / 56 ft-lb @ 6000 rpm
Top Speed
Fuel Tank Capacity
6.3 US gallons / 24.0 L
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 100S
Year
1979 – 80
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
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
As we ride briskly down a curving, rain-dampened road on the way to an early-morning photo session, the BMW R100RT proves its mettle. A sudden encounter with a helmet-sized rock and an oncoming car with its lights off puts its handling and stability to the test, and the RT passes with flying colors. Its 8 inches of front fork travel and inherent manageability are the key to its impressive performance.
The RT’s engine, powered by two constant depression carburetors, Bing 94/40/105-106, delivers a smooth and responsive ride, making it an ideal companion for long-distance touring. With a retail price of $6345, the RT is the most expensive line production motorcycle in the world, a testament to its exceptional quality and craftsmanship.
But what truly sets the RT apart is its unique blend of function and exclusivity. A BMW is not just a motorcycle, but a statement of style and sophistication, one that demands to be treated with respect and care. And with its legendary reputation for durability and longevity, the RT is an investment that will only appreciate with time. In short, the BMW R100RT is a masterpiece of engineering and design, a true icon of the motorcycling world.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Engine Capacity
980 cc / 59.8 cub in.
Max Power
51 kw / 70 hp
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)
515 lbs / 234 kg
Seat Height
32.3 inches / 820 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 100RT
Year
1978 – 79
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Displacement
980 cc / 59.8 cub in.
Bore x Stroke
94 x 70.6 mm
Compression Ratio
9.5:1
Number of Cylinders
Max Horsepower
51 kw / 70 hp
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 R 100RS Motorsport Special Edition embodies the essence of the Bavarian marque’s commitment to functionalism and simplicity. This latest iteration boasts a potent 980cc engine, featuring a 94mm bore and 70.6mm stroke, resulting in a torque-rich powerplant that rewards throttle input with seamless acceleration.
The 2 x Constant depression carburettors, Bing 94/40/105 – 94/40/106, perfectly complement the engine’s character, imbuing the R 100RS with a sense of urgency and responsiveness. As you settle into the saddle, the weight and balance of the bike become apparent, inviting you to explore its full potential on the twisties.
The riding experience is nothing short of exhilarating, with the R 100RS begging to be pushed to its limits. And push it you will, for in this special edition, the boundaries between road and track are blissfully blurred.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Engine Capacity
980 cc / 59.8 cub 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
6.3 US gallons / 24.0 L
Weight (Wet/Kerb)
506 lbs / 230 kg
Seat Height
32.3 inches / 820 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 100RS Motorsport Special Edition
Year
1978
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Displacement
980 cc / 59.8 cub in.
Bore x Stroke
94 x 70.6 mm
Compression Ratio
9.5:1
Number of Cylinders
Max Horsepower
51 kw / 70 hp
Max Torque
76 Nm / 7.75 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 latest iteration of the R Series from BMW has arrived, and it’s a beauty. The new R 100RS is the top-of-the-line model, boasting a 980cc engine with a 94mm bore and 70.6mm stroke. This increase in displacement has resulted in a more muscular torque output, making the ride a joy from low speeds to high.
The engine’s character is unmistakably BMW, with a smooth, linear power delivery that’s perfect for both touring and commuting. The Bing 94/40/105-94/40/106 constant depression carburetors provide precise fueling, while the O-ring seals and new crankcase ventilation systems have reduced oil consumption.
With its sleek design and impressive performance, the R 100RS is the ultimate expression of the BMW philosophy: functionalism, simplicity, and a commitment to excellence.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Engine Capacity
980 cc / 59.8 cub 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
6.3 US gallons / 24.0 L
Weight (Wet/Kerb)
506 lbs / 230 kg
Seat Height
32.3 inches / 820 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 100RS
Year
1978 – 79
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Displacement
980 cc / 59.8 cub in.
Bore x Stroke
94 x 70.6 mm
Compression Ratio
9.5:1
Number of Cylinders
Max Horsepower
51 kw / 70 hp
Max Torque
76 Nm / 7.75 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 R 100/7 – a motorcycle that defies expectations. While its sibling models, the S series and RS, cater to the fashion-conscious and status-seekers, the R 100/7 is the rugged, reliable workhorse that has earned the hearts of both tourists and working-class riders.
Its 980cc engine, weighing in at 474 pounds, is a force to be reckoned with. Initially, it shimmies and springs to life with a sudden, pulsating energy, before settling into a smooth idle with only a hint of big twin vibration.
As you navigate the twists and turns of the Superslab, the R 100/7’s balance of power and control makes it an exceptional companion, just as comfortable in crowded city traffic as it is on the open road.
With its robust character and timeless design, it’s no wonder the R 100/7 has remained a timeless classic, still thrilling riders with its unique blend of power and poise, a true testament to the enduring allure of the BMW legend.
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
44.1 kw / 60 hp
Max Torque
71.5 Nm / 7.29 kgf-m / 53 ft-lb @ 6500 rpm
Top Speed
Fuel Tank Capacity
24 L / 6.3 US gal
Weight (Wet/Kerb)
474 lbs / 215 kg
Seat Height
31.9 inches / 810 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 100/7
Year
1978 – 2010
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
The BMW R 80/7 embodies the essence of BMW’s slow-burning evolution, with a lineage tracing back to the 750. This 1978 iteration, essentially a bored-out R75, boasts a duplex endless timing chain, contact breakers, and mechanical advance/retard, all set amidst wire wheels and a solid shaft.
The bike’s robust front suspension features a beefed-up design, with reduced damping rod holes from four to two, while the British police’s influence is evident in the addition of a second disc on the front.
All engines feature the S model’s 9:1 compression ratio, and the Kinematics gearchange, though not entirely successful, marked an attempt to improve shifting dynamics. Cast wheels and Brembo brake calipers were later introduced, with the bike undergoing a major overhaul in late 1979.
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 / 43 lb-ft @ 4000 rpm
Top Speed
Fuel Tank Capacity
6.3 US gallons / 24.0 L
Weight (Wet/Kerb)
473 lbs / 215 kg
Seat Height
31.9 inches / 810 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 80/7
Year
1977-79
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
The BMW R 100S is a testament to the German marque’s commitment to simplicity and performance. With a 980cc, horizontally-opposed, two-cylinder engine, this bike delivers a perfect blend of comfort and sporting character. The Bing 94/40/105 carburetors provide precise fuel delivery, while the boxer engine’s smooth power delivery is a hallmark of the BMW experience.
The R 100S is not just a touring bike, but a machine capable of handling the demands of sidecar racing and competitive road riding. Its quiet and comfortable demeanor belies its impressive performance capabilities, making it an ideal choice for riders who crave a balance between comfort and excitement.
The BMW R 100S is a shining example of the marque’s innovative approach to motorcycle design, one that has earned it numerous championships and accolades over the years. With its robust engine, precise handling, and timeless styling, this bike is sure to delight riders and enthusiasts alike, and cement its place as a classic of the era.
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 / 7.7 kgf-m / 56 ft-lb @ 6000 rpm
Top Speed
Fuel Tank Capacity
6.3 US gallons / 24.0 L
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 100S
Year
1976 – 78
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
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
BMW’s top-of-the-range R100RS model embodies the company’s philosophy of quality, exclusivity, and high-performance touring. Its sleek, aerodynamically optimized fairing, designed in collaboration with Pininfarina, is a masterpiece of engineering that not only improves high-speed stability but also provides unparalleled protection from the elements.
Under the R100RS’s sleek lines lies a horizontally opposed, twin-cylinder engine that develops a healthy 70bhp at 7250 rpm. This potent powerplant, paired with two 40mm Bing carburetors, provides effortless acceleration and a top speed of around 125mph – although BMW’s designers would argue that’s not the point.
Riding the R100RS is an experience unlike any other, with its sublime balance of power and control allowing riders to tackle long-distance tours with ease and confidence. Whether navigating twisty mountain roads or cruising down the highway, the R100RS is a true grand tourer that redefines the art of motorcycle travel. And when the weather turns foul, the R100RS’s remarkable fairing proves to be a trusted companion, shielding riders from wind and rain while keeping them clean and dry.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Engine Capacity
980 cc / 59.8 cub 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
6.3 US gallons / 24.0 L
Weight (Wet/Kerb)
506 lbs / 230 kg
Seat Height
32.3 inches / 820 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 100RS
Year
1977
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Displacement
980 cc / 59.8 cub in.
Bore x Stroke
94 x 70.6 mm
Compression Ratio
9.5:1
Number of Cylinders
Max Horsepower
51 kw / 70 hp
Max Torque
76 Nm / 7.75 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
