The Unknown Unknown, a 2008-2009 marvel of engineering, boasts a free-breathing 45-degree V-Twin engine that cranks out 103 peak horsepower at 6,800 rpm.
With hydraulic self-adjusting lifters and a 2-into-1 Tuned exhaust system featuring an InterActive valve and mass-centralized mounting, this powerplant is as smooth as it is potent. Shifting gears becomes a breeze with the compact five-speed transmission.
A lightweight aluminum frame and Uniplanar Powertrain vibration isolation system ensure a comfortable ride, while Showa inverted forks and coil-over monoshock suspension provide exceptional handling and control.
But what truly sets the Unknown Unknown apart is its ability to balance performance and comfort. With a relaxed 54-inch wheelbase and generous storage compartment, this bike is perfect for long-distance touring. Whether you’re carving through twisties or cruising down the highway, the Unknown Unknown delivers an unforgettable riding experience that leaves you wanting more with every shift of the throttle.
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
16.7 L / 4.4 US gal
Seat Height
775 mm / 30.5″
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
Unknown Unknown
Year
2008 – 2009
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
Aluminium frame with Uniplanar Powertrain vibration isolation system, fuel in frame
Front Suspension
Showa 43 mm inverted forks compression damping, rebound damping and spring preload adjustable
Front Suspension Travel
120 mm / 4.7″
Rear Suspension
Showa coil-over monoshock, remote underseat reservoir and adjustable compression damping, rebound damping and spring preload
Rear Suspension Travel
127 mm / 5.0″
Rake
22
Trail
119 mm / 4.7″
Wheels & Brakes
Wheels
6-Spoke, ZTL cast aluminium
Front Wheel/Rim Size
3.50 x 17″
Front Tire Size
120/70 ZR17 Dunlop D208FW
Rear Wheel/Rim Size
5.50 x 17″
Rear Tire Size
180/55 ZR17 Dunlop D208M
Front Brakes
ZTL type brake, 6 piston, fixed caliper, 375 mm single-sided, inside out, stainless steel, floating rotor
Rear Brakes
Single 240 mm disc, 1 piston floating caliper
Dimension & Weights
Overall Length
2023
Seat Height
775 mm / 30.5″
Wheelbase
1372 mm / 54.0″
Ground Clearance
118 mm / 4.6″
Fuel Tank Capacity
16.7 L / 4.4 US gal
Dry Weight
181.5 kg / 400 lbs
Features
45 V-Twin engine
Hydraulic self-adjusting lifters
Overhead valve design
Two valves per cylinder
Free breathing exhaust system
Aluminium frame with Uniplanar Powertrain vibration isolation system
Fuel in frame
Showa 43 mm inverted forks with adjustable compression damping, rebound damping, and spring preload
Showa coil-over monoshock with remote underseat reservoir and adjustable compression damping, rebound damping, and spring preload
ZTL type brake with 6 piston fixed caliper and 375 mm single-sided floating rotor
54-inch wheelbase
Taller and wider seat
Expanded storage compartment in the seat
Larger frame side panels for increased fuel capacity
Buell Thunderstorm 1203 V-Twin engine
103 peak hp @ 6800 rpm
84 ft. lbs. peak torque @ 6000 rpm
Buell InterActive Exhaust
New DDFI 3 Electronic Fuel Injection ECM
Eight-row oil cooler with Jiffy-tite fittings
*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
