The Unknown Unknown is a breed apart from its contemporaries, with its free-breathing 45-degree V-Twin engine revving out a thunderous 103 peak horsepower and 84 ft-lbs of torque.
Its potent Thunderstorm 1203 powerplant is no stranger to drama, thanks in part to the Buell InterActive Exhaust system that expertly manages airflow. This potent combination is married to an equally capable six-speed transmission, boasting smoother shifting and a more efficient gear ratio spread.
But what truly sets this bike apart is its masterful handling, courtesy of Showa’s 41mm fully adjustable forks and rear shock absorber working in tandem with the Uniplanar Powertrain vibration isolation system. The result is a ride that is both visceral and refined, one that demands attention but rewards finesse.
The Unknown Unknown is the ultimate streetfighter, its every component meticulously crafted to deliver uncompromised performance with unparalleled agility.
Key Specifications
Engine Type
45 V-Twin, four stroke, pushrod actuated overhead valve.hydraulic self-adjusting lifters,2 valve per cylinder.
Engine Capacity
1203 cc / 73 cu in
Max Power
86.9 kw / 103 hp
Max Torque
114 Nm / 11.6 kgf-m / 84 ft-lbs @ 6000 rpm
Fuel Tank Capacity
14 L / 3.7 US gal
Seat Height
726 mm / 28.6″
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
Unknown Unknown
Year
2005 – 2006
Engine
Engine Type
45 V-Twin, four stroke, pushrod actuated overhead valve.hydraulic self-adjusting lifters,2 valve per cylinder.
Displacement
1203 cc / 73 cu in
Bore x Stroke
88.9 x 96.8 mm
Compression Ratio
10.0:1
Max Horsepower
86.9 kw / 103 hp
Max Torque
114 Nm / 11.6 kgf-m / 84 ft-lbs @ 6000 rpm
Engine Management System
49 mm downdraft DDFI II fuel injection
Lubrication System
Dry sump
Cooling System
Air cooled
Exhaust
Free breathing, 2-into-1 Tuned, tri-pass resonance chamber with InterActive valve and mass-centralized mounting
Goodyear Hibrex drive belt with Flexten Plus technology
New lighter, stiffer swingarm design
Air intake location relocated to improve airflow
*We strive to provide the most comprehensive and accurate specifications possible. However, certain details may not be available if the manufacturer did not disclose them or if the information is no longer publicly accessible. If you find any discrepancy with any data on this site, please feel free to let us know at contact@throttlecraze.com
