Built around Buell's sport motorcycle platform, the 2006 Buell Firebolt XB12R utilizes a 1203 cc (73.4 cu in) oil & air-cooled v2, four-stroke layout. In factory specification, peak output is rated at 103 HP (75.2 kW) at 6,800 rpm while maximum torque reaches 113.9 Nm (84 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and belt final drive. With a specific output of 85.6 HP per liter and a 800 rpm working window between peak torque (6,000 rpm) and peak power (6,800 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Firebolt XB12R measures 179.2 kg (395 lbs) dry, translating to a power-to-weight ratio of 0.57 HP/kg (1.74 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,318 mm (51.9 in) wheelbase engineered for quick, flickable steering geometry. The 14.45-liter (3.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Buell archive, this model family spans 6 indexed model years from 2004 to 2009, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
85.6 HP/L
Power-to-Weight
0.57 HP/kg (1.74 kg/HP)
Power Band Window
6,000–6,800 rpm
Engine
Displacement1203.0 ccm (73.41 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Power103.0 HP (75.2 kW)) @ 6800 RPM
Torque113.9 Nm (11.6 kgf-m or 84.0 ft.lbs) @ 6000 RPM
Compression10.0:1
Bore x Stroke88.9 x 96.8 mm (3.5 x 3.8 inches)
Fuel SystemInjection
LubricationDry sump
CoolingOil & air
Transmission
Gearbox5-speed
Final DriveBelt (final drive)
ClutchWet, multiplate, compensated, reduced lever effort
Chassis
Frame TypeAluminium
Rake21.0°
Trail84 mm (3.3 inches)
Front SuspensionShowa® inverted fork with adjustable compression damping, rebound damping and spring preload
Front Travel120 mm (4.7 inches)
Rear SuspensionShowa® Fully adjustable, coil-over monoshock with remote, underseat reservoir
Rear Travel129 mm (5.1 inches)
Wheelbase1318 mm (51.9 inches)
Ground Clearance110 mm (4.4 inches)
Wheels & Brakes
Front Tyre120/70-ZR17
Rear Tyre180/55-ZR17
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight179.2 kg (395.0 pounds)
Power/Weight0.5749 HP/kg
Overall Height1100 mm (43.3 inches)
Overall Length1935 mm (76.2 inches)
Overall Width716 mm (28.2 inches)
Fuel Capacity14.45 litres (3.82 US gallons)
Other
StarterElectric
Color OptionsMidnight Black/Racing Red/Thrust Blue
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
