The Unknown Unknown’s 2008 Buell Lightning XB12S is a naked sports bike that embodies the perfect blend of power, style, and versatility. Its 1203cc V-Twin engine is a beast on the road, delivering an impressive 100 HP at 6600 RPM and 109.70 Nm at 6000 RPM. The bike’s lightweight aluminum frame and Showa front and rear suspension ensure a smooth riding experience, while its 375mm front and 240mm rear brakes provide exceptional stopping power.
But what truly sets the XB12S apart is its striking streetfighter-like design, featuring two round headlights underneath a small fairing that turns heads wherever it goes. Whether you’re carving through twisties or cruising on the highway, this bike’s got the goods to keep up with your riding style.
And yet, despite its many strengths, the XB12S remains an underappreciated gem in the world of motorcycles – but those who experience its unique charm and thrilling performance will never forget it.
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
765 mm / 30.1″
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
Unknown Unknown
Year
2008
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, 127mm wheel travel
Rear Suspension Travel
127 mm / 5.0″
Rake
21
Trail
83 mm / 3.3″
Wheels & Brakes
Wheels
6-Spoke, ZTL cast aluminium
Front Wheel/Rim Size
3.50 x 17″
Front Tire Size
120/70 ZR17 Pirelli
Rear Wheel/Rim Size
5.50 x 17″
Rear Tire Size
180/55 ZR17 Pirelli
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
1924
Seat Height
765 mm / 30.1″
Wheelbase
1320 mm / 52.0″
Ground Clearance
110 mm / 4.4″
Fuel Tank Capacity
14 L / 3.7 US gal
Dry Weight
179 kg / 395 lbs
Features
1203cc V-Twin engine
Fuel injection
100 HP at 6600 RPM (2004 model)
109.70 NM at 6000 RPM (2004 model)
Aluminum frame
Showa front and rear suspension
375mm front brakes
240mm rear brakes
Light weight of 394.6 pounds
Round headlights under a small fairing
Available colors: Midnight Black, Racing Red/Graphite-Grey/Translucent Amber (2004)
Available colors: Midnight Black, Racing Red, Thrust Blue (2005)
Belt drive replaced with shaft drive in 2005
Significant power increase to 103 HP at 6800 RPM in 2006
52 inch wheelbase
21 degree rake
3.3 inches of trail
*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
