Key performance

90 ch
Power
🔧
1803 cc
Displacement
🏎️
180 km/h
Top speed
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Technical specifications

Engine

Displacement
1803 cc
Power
90.0 ch (66.2 kW)
Engine type
Bicylindre à plat, 4 temps
Cooling
combiné air / huile
Bore × stroke
107.1 x 100 mm
Valves/cylinder
4
Fuel system
Injection

Chassis

Frame
Structure en tubes métallique
Gearbox
boîte à rapports manuelle
Final drive
Cardan
Front suspension
Fourche téléhydraulique Ø nc
Rear suspension
Mono-amortisseur

Brakes

Front brakes
Freinage 2 disques Brembo, fixation radiale, étrier 4 pistons
Rear brakes
Freinage 1 disque
Front tyre
120/70-19
Rear tyre
180/60-16

Overview

What happens when Munich decides to break its own stylistic codes? The result is the BMW Concept R18/2, dubbed "Slash Two" — a styling exercise that takes a radical stance against its direct predecessor. Where the first Concept R 18 played the vintage card, almost nostalgic in its rounded, serene forms, this second chapter cuts to the bone with a taut silhouette, elongated proportions, and a visual aggression that clearly draws inspiration from the most muscular American customs. BMW isn't trying to sell a motorcycle here — it's trying to measure how much territory it can cover with one single engine.

BMW Concept R18 /2

That engine, as it happens, is the true protagonist of the story. The 1803cc horizontally opposed twin, air- and oil-cooled, produces 90 horsepower with a claimed top speed of 180 km/h. These figures may seem modest against an Indian Scout or a Harley-Davidson Sportster S, but the BMW boxer has never claimed to compete on raw power. Its identity lies in that generous torque available from the very first revs, the guttural soundtrack unique to horizontally opposed cylinders, and a visual presence few engines in the world can rival. Here, it receives a warm grey finish, gloss black valve covers, and a matte black tubular frame — all designed to showcase the mechanics rather than conceal them.

The Candy Apple Red metallic paint deserves closer attention. This red is not uniform — it lives with the angle of light, shifting from an almost electric crimson to a deep burgundy depending on the sun's angle. Graphic lines run along the teardrop tank, climb over the wheel cover, and extend visually to the seat, creating an optical dynamic that makes the motorcycle appear even more slender than it is. The shortened rear fender, minimalist handlebar, and cast wheels — 19 inches up front and 16 inches at the rear — contribute to the impression of an urban dragster. The four-piston Brembo calipers and stainless steel Hattech exhaust are not there for show: they signal a genuine intention to perform, not merely to pose.

What fascinates about BMW's approach is the demonstration of flexibility it performs. From the "Departed" by CUSTOMWORKS ZON to the "Revival Birdcage" from Austin, and through the first Concept R 18, this same boxer engine has taken on radically different identities without ever betraying its character. The Slash Two is the fourth variation on this theme, and arguably the most provocative. It speaks to a rider who wants shaft drive, German reliability, and the brand's historical DNA, but refuses to be mistaken for a retro folklore enthusiast. A demanding urban rider, as attuned to design as to mechanics, who understands that style is not the enemy of substance.

BMW Concept R18 /2

One legitimate question remains: how far is BMW willing to push this platform? The Slash Two proves that the big boxer foundation can support stylistic directions far removed from one another. That is a strong promise for the production lineup to come, where custom variants could multiply personalities without diluting the central identity. For now, this concept charts its course with conviction.

Practical info

  • La moto est accessible aux permis : A

Indicators & positioning

🔧
Volumetric power
49.3 ch/L
In category Custom / cruiser · 902-3606cc displacement (2780 motorcycles compared)
Power 89 ch Top 41%
49 ch median 80 ch 152 ch

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