CR&S VUN Underpowered - Specifications & Review

VUN Underpowered

Article Complete Info

Articleid898889
CategoryNaked bike
MakeCR&S
ModelVUN Underpowered
Year2007

Chassis, Suspension, Brakes & Wheels

FrametypeSteel tubes and machined light alloy plates compound
FrontbrakesSingle disc
FrontsuspensionHydraulic fork
Fronttyre120/70-ZRX17
Frontwheeltravel120 mm (4.7 inches)
RearbrakesSingle disc
RearsuspensionSwingarm
Reartyre160/60-ZRX17
Rearwheeltravel128 mm (5.0 inches)

Engine & Transmission

Borexstroke100.0 x 83.0 mm (3.9 x 3.3 inches)
ClutchWet multiplate
Compression9.7:1
CoolingsystemLiquid
Displacement652.00 ccm (39.79 cubic inches)
EnginedetailsSingle cylinder, four-stroke
FuelsystemInjection. Walbro integrated
Gearbox5-speed
LubricationsystemDry sump
Power29.00 HP (21.2 kW)) @ 6000 RPM
Torque37.00 Nm (3.8 kgf-m or 27.3 ft.lbs) @ 4000 RPM
Valvespercylinder4

Other Specifications

CommentsCR and S is an abbreviation of Cafe Racers and Superbikes.

Physical Measures & Capacities

Dryweight135.0 kg (297.6 pounds)
Fuelcapacity14.00 litres (3.70 gallons)
Groundclearance150 mm (5.9 inches)
Overalllength1,980 mm (78.0 inches)
Powerweightratio0.2148 HP/kg
Seatheight800 mm (31.5 inches) If adjustable, lowest setting.

About CR&S

Country of Origin: Italy
Founder: Roberto Crepaldi (with former racer contributions)
Best Known For: Hand-built VUN single and DUU big-twin—Milanese cafè exotica

Company History

CR&S—Cafe Racers & Superbikes—operates like a Milan atelier, crafting low-volume motorcycles that fuse Italian design flair with focused engineering. The VUN distilled the single-cylinder idea to its purest roadgoing essence: minimal bodywork, light weight, and geometry tuned for engagement over comfort. Later, the DUU (doo) translated that ethos to a charismatic big-twin platform, using a muscular American V-twin within a chassis that kept mass centralized and steering precise. Buyers participated in the process—specifying components, finishes, and ergonomics—so each machine felt tailored. The brand’s bikes radiate a particular Milanese modernism: purposeful welds, exposed structure, and form following function without austerity. Homologation, supplier economics, and tiny volumes keep CR&S on the fringes of the market, but that is part of the attraction; these are connoisseur’s motorcycles, intended for Sunday morning perfectionists who savor feedback through the bars and the satisfaction of owning something truly uncommon. Historically, CR&S preserves the Italian tradition of small shops acting as cultural counterweights to mass production—reminding riders that there’s room for machines built around feel rather than focus groups. The VUN and DUU are less about outright speed than about presence and precision, a celebration of control inputs rendered in metal. In a world of software layers, CR&S offers an analog conversation between road and rider, edited to the essentials.

Other Years

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