Key performance
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.

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.

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
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