BMW R 18 - 2021 Specifications and Reviews

The 2021 BMW R 18 is a cruiser built for riders seeking classic styling with modern reliability. Its massive 1802cc boxer engine delivers impressive low-end torque of 157.3 Nm, ideal for relaxed, commanding highway cruising. Known for its retro aesthetics and refined engineering, the R 18 appeals to experienced riders wanting a premium, easy-to-live-with cruiser.

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General information

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CategoryCustom / cruiser
Year2021
ModelBMW R 18
 
 

Engine and Transmission Specifications

Emission detailsRegulated three-way catalytic converter
ClutchSingle-disc dry
Transmission typeShaft drive (cardan)   (final drive)
Gearbox6-speed
Cooling systemOil & air
IgnitionBMS-K+ electronic engine management with overrun cut-off and twin-spark ignition
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection. Electronic intake pipe fuel injection
Valves per Cylinder4
Bore x Stroke107.1 x 100.0 mm (4.2 x 3.9 inches)
Compression9.6:1
Top speed178.6 km/h (111.0 mph)
Torque157.3 Nm (16.0 kgf-m or 116.0 ft.lbs) @ 3000 RPM
Power91.0 HP (66.4 kW) @ 4750 RPM
Engine detailsPolished aluminum cylinder covers
Engine typeTwo cylinder boxer, four-stroke
Capacity:1802.0 ccm (109.96 cubic inches)
 
 

Brakes, suspension, Frame and wheels

WheelsWire spoked
Rear brakesSingle disc. 4 piston fixed calipers
Diameter300 mm (11.8 inches)
Front brakesDouble disc. 4 piston fixed calipers
Rear tire180/65-B16
Front tire120/70-R19
Rear wheel travel89 mm (3.5 inches)
Rear SuspensionSteel swingarm with central shock strut
Front wheel travel119 mm (4.7 inches)
Front SuspensionTelescopic fork
Trail150 mm (5.9 inches)
Rake (fork angle)22.7°
Frame typeDouble-cradle steel

Physical measures and capacities

Reserve fuel capacity3.79 litres (1.00 US gallons)
Fuel capacity16.01 litres (4.23 US gallons)
Wheelbase1730 mm (68.1 inches)
Overall width965 mm (38.0 inches)
Overall length2441 mm (96.1 inches)
Overall height1125 mm (44.3 inches)
Seat height691 mm (27.2 inches) If adjustable, lowest setting.
Power/weight ratio0.2636 HP/kg
Dry weight345.2 kg (761.0 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
LightLED headlight
ElectricalPermanent magnet generator 600 W. 12 V / 26 Ah, maintenance-free.
StarterElectric
Color optionsBlack

Performance Profile & Rider Fit

91 hp
Peak Power
4.8s
0-60 mph
111 mph
Top Speed

Best For

Track5%
City40%
Cornering35%
Daily Riding55%
Touring58%
Passenger55%

Rider Profile

Best ForBest suited to riders who already have experience handling heavy, low-slung machines, since the R 18's substantial weight demands confident low-speed control.
PurposeBuilt for cruising and boulevard presence rather than outright speed, prioritizing big-bore torque, classic boxer styling, and relaxed highway pace.
Rider FitA tall and very heavy motorcycle that rewards riders with decent strength and a longer inseam for managing it at parking-lot speeds, though the low seat height helps flat-footing.
CharacterA traditionalist's cruiser with massive low-end torque, a thumping boxer character, and old-school shaft-drive charm over modern sport-touring sophistication.
Not Ideal ForNot a good fit for riders seeking agile cornering, off-road capability, or sport-bike acceleration.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 BMW R 18 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 691mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2021 BMW R 18, with a cramped knee angle of around 75 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2021 BMW R 18 is a stunning addition to the BMW motorcycle lineup. With its classic design and powerful engine, this bike is sure to turn heads on the road. The 1802cc boxer engine delivers an impressive 91 horsepower, providing plenty of oomph for riders who crave speed and performance. The R 18 also boasts modern technology features such as LED lighting, ABS, and three riding modes to cater to different preferences. Overall, the 2021 BMW R 18 is a beautiful and powerful motorcycle that is sure to impress riders and onlookers alike. If you're in the market for a high-performance and stylish motorcycle, the 2021 BMW R 18 is an excellent choice. Its classic design, powerful engine, and modern technology features make it a standout in the competitive motorcycle market. Whether you're a seasoned rider or a newcomer to the world of motorcycles, the R 18 offers a smooth and exhilarating ride that is sure to satisfy. If you're looking for a bike that combines heritage with cutting-edge engineering, the 2021 BMW R 18 is the motorcycle for you.
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