CR&S VUN Underpowered
2007Naked

CR&S VUN Underpowered

Key specifications

Engine
652 cc
Power
29 HP
Torque
37 Nm
Weight
135 kg
Fuel type
petrol
Fuel capacity
3.7 L
Transmission
5-speed
Seat height
32 mm
Front brakes
Single disc
Rear brakes
Single disc

Overview

Introducing the 2007 CR&S VUN Underpowered, a unique entry into the naked bike category that embodies the spirit of cafe racers while embracing a modern aesthetic. With a name that playfully suggests a lack of power, the VUN Underpowered is anything but ordinary. Crafted by the Italian manufacturer CR&S, renowned for its bespoke motorcycles, this model stands out with its striking design and a commitment to minimalist elegance. The VUN is designed for riders who appreciate the art of motorcycling in its purest form, offering an experience that prioritizes style and agility over sheer horsepower. At the heart of the VUN Underpowered is a 652cc single-cylinder, four-stroke engine that delivers a modest yet spirited 29 horsepower at 6,000 RPM and 37 Nm of torque at 4,000 RPM. While the numbers may not scream performance, the bike’s lightweight frame (weighing in at just 135 kg) and responsive handling create a riding experience that's both engaging and accessible. The 5-speed gearbox and wet multiplate clutch allow for smooth gear transitions, making city commuting or weekend rides a sheer delight. The VUN's design encourages confident cornering, complemented by a hydraulic fork and swingarm suspension that offer 120 mm and 128 mm of travel, respectively, ensuring comfort and stability over various road conditions. The CR&S VUN Underpowered is not just about looks; it is packed with thoughtful features that enhance the riding experience. Its steel tube frame, combined with machined light alloy plates, provides both strength and a lightweight profile. The bike's fuel injection system, integrated by Walbro, ensures efficient fuel delivery, while its liquid cooling keeps the engine operating at optimal temperatures. With a fuel capacity of 14 liters, riders can enjoy longer journeys without frequent stops, all while the adjustable seat height of 800 mm accommodates a range of rider sizes, making it approachable for many enthusiasts. **

Pros

  • Lightweight and Agile: Weighing just 135 kg, the VUN offers nimble handling, perfect for urban environments and twisty roads.
  • Unique Design: The bike’s aesthetic is a head-turner, combining cafe racer charm with modern craftsmanship, appealing to those who value style.
  • Comfortable Ride: With a well-thought-out suspension setup and an adjustable seat height, the VUN caters to a variety of riders, enhancing comfort during longer rides.

Cons

  • Modest Power Output: With only 29 HP, the VUN may not satisfy riders looking for high-performance thrills.
  • Limited Storage: The minimalist design leaves little room for practical storage solutions, which could be a drawback for daily commuters.
  • Niche Appeal: Its unique styling and performance may not resonate with all motorcycle enthusiasts, potentially limiting its market reach.

Technical details

Source specification data

Make
CR&S
Model
VUN Underpowered
Category
Naked bike
Comments
R
and
S
is an abbreviation of
Cafe Racers
and
Superbikes
.
Power
29.00 HP (21.2 kW)) @ 6000 RPM
Clutch
Wet multiplate
Torque
37.00 Nm (3.8 kgf-m or 27.3 ft.lbs) @ 4000 RPM
Gearbox
5-speed
Fuel System
Injection. Walbro integrated
Bore X Stroke
100.0 x 83.0 mm (3.9 x 3.3 inches)
Compression
9.7:1
Displacement
652.00 ccm (39.79 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, four-stroke
Lubrication System
Dry sump
Valves Per Cylinder
4
Dry Weight
135.0 kg (297.6 pounds)
Seat Height
800 mm (31.5 inches) If adjustable, lowest setting.
Fuel Capacity
14.00 litres (3.70 gallons)
Overall Length
1,980 mm (78.0 inches)
Ground Clearance
150 mm (5.9 inches)
Power Weight Ratio
0.2148 HP/kg
Rear Tyre
160/60-ZRX17
Frame Type
Steel tubes and machined light alloy plates compound
Front Tyre
120/70-ZRX17
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Suspension
Swingarm
Front Suspension
Hydraulic fork
Rear Wheel Travel
128 mm (5.0 inches)
Front Wheel Travel
120 mm (4.7 inches)