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Cruisers

2021BMW R 18 Custom

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The 2021 BMW R 18 Custom is a concept cruiser powered by a massive 1802cc boxer twin delivering 91 horsepower and impressive 157.3 Nm torque. Built for riders seeking classic cruiser styling with modern technology, this shaft-drive machine exemplifies BMW's vision of accessible, characterful big-displacement motorcycling with authentic retro appeal and contemporary reliability.

Capacity
1802.0 ccm
Engine
Boxer, four-stroke
Gearbox
6-speed
Dry weight
Not on record
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Seat height
690 mm
Power
91.0 HP (66.4 kW) @ 4750 RPM
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How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 45Agility 35Comfort 55Off-road 5Touring 30Road manners 65
Off-road & trail5%
Cornering40%
City riding40%
Daily riding35%
Touring30%
Two-up15%
Track15%
Best for
Built as a rolling art piece and style statement, it exists to showcase custom bobber design language rather than to serve any practical riding role.
Built for
A brooding, minimalist bobber that trades practicality for pure visual drama, powered by BMW's iconic big-boxer torque.
Not ideal for
This is not the bike for riders wanting agile cornering, off-road capability, passenger comfort, or genuine long-distance touring amenities.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 690mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2021 BMW R 18 Custom, with a cramped knee angle of around 75 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 750 mm or under — Short Kings →

Find bikes that fit your height →

Full specifications

Engine
Capacity
1802.0 ccm
Power
91.0 HP (66.4 kW) @ 4750 RPM
Torque
157.3 Nm (16.0 kgf-m) @ 3000 RPM
Engine type
Boxer, four-stroke
Bore x stroke
107.1 x 100.0 mm
Compression
9.6:1
Cooling system
Oil & air
Fuel system
Injection
Starting
Electric
Valves per cylinder
4
Transmission
Gearbox
6-speed
Transmission type
Manual
Dimensions & weight
Seat height
690 mm
Fuel capacity
16.00 litres
Reserve fuel capacity
3.80 litres
Dry weight
Not on record - add it
Chassis & suspension
Frame
Double-cradle steel
Front suspension
Telescopic fork
Rear suspension
Steel swingarm with central shock strut
Brakes & wheels
Front brakes
Double disc. 4 piston fixed calipers
Front brakes diameter
300 mm
Rear brakes
Single disc. 4 piston fixed calipers
Front tyre
120/70-R19
Rear tyre
180/65-B16
Other
Color options
Black
Comments
Also called 'Spirit of Passion' by Kingston Custom. Designed by Dirk Oehlerking. Not for sale.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

Rider Reviews

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MotorcycleDB

The 2021 BMW R 18 Custom motorcycle is a stunning piece of machinery, boasting a classic design with modern engineering. The large displacement boxer engine provides impressive power and torque, while the timeless styling sets it apart from other bikes on the market. With its high-quality components and impeccable attention to detail, the R 18 Custom is a true standout in the world of custom motorcycles.

From the gleaming chrome accents to the smooth lines of the bodywork, the 2021 BMW R 18 Custom is a sight to behold. Its bold presence on the road is sure to turn heads, and the comfortable riding position makes it a joy to ride for long distances. Overall, the R 18 Custom is a top-notch motorcycle that offers a perfect blend of performance and style for riders who demand the best.

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Common questions

What is the engine size of the BMW R 18 Custom?

The 2021 BMW R 18 Custom has a Capacity of 1802.0 ccm (109.96 cubic inches).

What engine power does the BMW R 18 Custom have?

The 2021 BMW R 18 Custom has a Power of 91.0 HP (66.4 kW) @ 4750 RPM.

How many gears does the BMW R 18 Custom have?

The 2021 BMW R 18 Custom has a Gearbox of 6-speed.

What is the torque of the BMW R 18 Custom?

The 2021 BMW R 18 Custom has a Torque of 157.3 Nm (16.0 kgf-m or 116.0 ft.lbs) @ 3000 RPM.

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