Buell Firebolt XB12R - 2004 Specifications and Reviews

The 2004 Buell Firebolt XB12R is a lightweight American sport bike renowned for its aggressive styling and torque-rich V-twin engine. Ideal for riders seeking nimble handling and raw character, the XB12R delivers 100 horsepower and impressive 109.7 lb-ft of torque in a compact, unconventional package. Its air-cooled engine and minimalist design define Buell's distinctive philosophy.

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General information

CategorySport
Year2004
ModelBuell Firebolt XB12R

Engine and Transmission Specifications

Transmission typefinal driveBelt
Gearbox5-speed
Cooling systemAir
Fuel controlOHV
Valves per cylinder2
Fuel systemInjection
Bore x stroke88.9 x 96.8 mm (3.5 x 3.8 inches)
Compression10.0:1
Torque109.70
Power100.00
Stroke4
Engine typeTwin
Capacity:1203.00 ccm (73.41 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,320 mm (52.0 inches)
Ground clearance127 mm (5.0 inches)
Overall width768 mm (30.2 inches)
Overall length1,924 mm (75.7 inches)
Overall height1,092 mm (43.0 inches)
Seat height775 mm (30.5 inches) If adjustable, lowest setting.
Dry weight179.0 kg (394.6 pounds)

Buell Firebolt XB12R dimensions and frame

Rear brakes diameter240 mm (9.4 inches)
Rear brakesSingle disc
Front brakes diameter375 mm (14.8 inches)
Front brakesSingle disc
Rear tyre dimensions180/55-ZR17
Front tyre dimensions120/70-ZR17
Rear suspension travel127 mm (5.0 inches)
Rear suspensionShowa shock absorber with adjustable compression damping, rebound damping and spring preload
Front suspension travel120 mm (4.7 inches)
Front suspensionShowa inverted fork with adjustable compression damping, rebound damping and spring preload
Trail83 mm (3.3 inches)
Rake (fork angle)21.0°
Frame typeAluminium Frame with Uniplanar powertrain vibration isolation system
 
 

Speed and acceleration

Power/weight ratio0.5587 HP/kg

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsMidnight Black, Racing Red/Graphite-Grey/Translucent Amber
Fuel capacity14.00 litres (3.70 gallons)

Performance Profile & Rider Fit

103 hp
Peak Power
3.3s
0-60 mph

Best For

Track70%
City65%
Cornering90%
Daily Riding55%
Touring40%
Passenger35%

Rider Profile

Best ForThis bike suits an intermediate to experienced rider who appreciates a torquey, characterful V-twin with sharp, unconventional handling.
PurposeBuilt for aggressive cornering and spirited backroad riding rather than outright top-speed runs or long-distance touring.
Rider FitA light, compact chassis with a low center of mass makes it manageable for riders of varying size, though the firm suspension and sporty ergonomics reward a fit, active riding style.
CharacterQuirky and distinctive, with a thumping V-twin, mass-centralized design, and race-derived brakes that give it a raw, engaging personality unlike typical naked bikes.
Not Ideal ForNot a good fit for riders seeking plush comfort, pillion-friendly touring capability, or off-road versatility.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2004 Buell Firebolt XB12R Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 775mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2004 Buell Firebolt XB12R, with a cramped knee angle of around 65 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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