Positioning:
Performance-oriented sportbike targeting experienced riders seeking unique styling and handling.
Competitors:
Competed with other sportbikes of its era such as Ducati Monster, Aprilia Shiver, and some Japanese inline-fours, offering a distinct character and handling.
Design Philosophy:
Erik Buell's innovative approach with frame acting as fuel tank, swingarm as oil reservoir, and perimeter front brake.
Handling Characteristics:
Renowned for its 'Uniplanar' suspension design and tight-turning radius.
Engine:
Disassembly, assembly, inspection, tuning, troubleshooting for V-Twin engines.
Fuel System:
Carburetor (Mikuni BDSR 40 for XB9R) and Fuel Injection (for XB12R) system diagnostics, cleaning, and adjustment.
Electrical System:
Wiring diagrams, component testing, ignition system, lighting, starting, charging systems.
Transmission:
Clutch, gearbox, final drive maintenance and repair.
Brakes:
Front and rear brake system servicing, caliper rebuilds, fluid replacement, rotor inspection.
Suspension:
Front forks (Show), rear shock absorber servicing, adjustment, and replacement.
Chassis And Frame:
Frame inspection, swingarm maintenance, steering head bearing service.
Bodywork And Trim:
Fairing removal/installation, body panel repairs, seat maintenance.
Routine Maintenance:
Oil changes, filter replacements, chain adjustment, spark plug replacement, air filter cleaning/replacement.
Troubleshooting:
Diagnostic procedures for common and uncommon issues, fault code interpretation (if applicable).
Rebuilding:
Engine rebuild procedures, transmission overhaul, carburetor/fuel injection system rebuild.
Adjustment And Tuning:
Carburetor synchronization, ignition timing checks, suspension adjustments.
Component Replacement:
Detailed instructions for replacing all major and minor components.
Depth:
Full factory-level repair and diagnostic procedures.
Diagnostic Capabilities:
Includes electrical diagnostics, mechanical diagnostics, and troubleshooting trees.
Special Tools:
Lists required special tools and their part numbers for specific procedures.
Engine Type Xb9R:
Air-cooled, 45-degree V-Twin, 4-stroke, OHV, 2 valves per cylinder (pushrod actuated).
Displacement Xb9R:
984 cc (60 cu in)
Bore Xb9R:
3.50 in (88.9 mm)
Stroke Xb9R:
3.13 in (79.5 mm)
Compression Ratio Xb9R:
9.0:1
Power Output Xb9R:
Approx. 83 hp (62 kW) @ 6600 rpm
Torque Output Xb9R:
Approx. 70 ft-lb (95 Nm) @ 5500 rpm
Engine Type Xb12R:
Air-cooled, 45-degree V-Twin, 4-stroke, OHV, 2 valves per cylinder (pushrod actuated).
Displacement Xb12R:
1203 cc (73.4 cu in)
Bore Xb12R:
3.49 in (88.6 mm)
Stroke Xb12R:
3.98 in (101.1 mm)
Compression Ratio Xb12R:
9.2:1
Power Output Xb12R:
Approx. 103 hp (77 kW) @ 6800 rpm
Torque Output Xb12R:
Approx. 85 ft-lb (115 Nm) @ 5500 rpm
Fuel Delivery Xb9R:
Mikuni BDSR 40mm constant velocity carburetor
Fuel Delivery Xb12R:
Electronic Fuel Injection (EFI) with Electronic Throttle Control (ETC)
Fuel Type:
Unleaded gasoline, minimum 91 octane recommended.
Crash Safety Ratings:
N/A (Motorcycle, not subject to standard automotive crash testing)
Braking System Front:
Buell ZTL (Zero Taper Lock) floating disc with 6-piston caliper, 375mm diameter. The large diameter disc is mounted to the wheel rim, not the hub.
Braking System Rear:
230mm disc with 2-piston caliper.
Frame Design:
Aluminum frame, also serves as fuel reservoir for a low center of gravity.
Instrumentation:
Digital speedometer, tachometer, odometer, trip meters, clock, and indicator lights. Analog tachometer often incorporated into a central display.
Traction Control:
N/A for these model years.
Connectivity Features:
N/A (Basic motorcycle electronics)
Oil Change Interval:
Every 5,000 miles (8,000 km) or 12 months. Manual may specify more frequent checks.
Spark Plug Replacement:
Refer to manual for specific mileage, typically around 15,000-20,000 miles.
Belt Tension Check:
Regular checks recommended, typically at every oil change.
Engine Oil Type:
Buell recommends specific Harley-Davidson or equivalent high-quality synthetic motorcycle oil. Check manual for exact specifications (e.g., viscosity grade like 20W-50).
Engine Oil Capacity:
Refer to manual, typically around 3 quarts (2.8 L).
Brake Fluid Type:
DOT 4 brake fluid.
Primary Chain Case Oil:
Harley-Davidson primary chain case lubricant or equivalent.
Common Problems:
Potential for electrical gremlins, cam chain tensioner wear on earlier models, and exhaust header pipe leaks. Carburetor jetting can be sensitive to altitude and modifications.
Common Problems Specific To Era:
EFI systems on XB12R can require software updates. Early belt drives could be prone to premature wear if not maintained. Vibration at idle can be noticeable.
Brand Focus:
Innovative sportbikes using Harley-Davidson engines, emphasizing handling and braking.
Xb Series Launch:
The XB series was introduced in 2002, with the Firebolt XB9R being a prominent model. The XB12R followed, offering increased displacement and torque.
Year Specific Updates 2005-2008:
Models from 2005-2008 saw refinements in suspension, fueling (EFI on XB12R), and styling. Significant changes included revised fuel mapping, updated suspension components, and aesthetic updates like new color schemes and revised bodywork.
Manufacturing Location:
East Troy, Wisconsin, USA
Production Status:
Buell Motorcycle Company ceased production in 2011, though a new iteration was later announced.
Motorcycle Press Acclaim:
Buell Firebolts were often praised by motorcycle journalists for their sharp handling, unique styling, and powerful V-twin character, though sometimes criticized for vibration and rider comfort on longer rides.
Performance Handling Reputation:
Consistently rated highly for their agility and cornering ability, making them a popular choice for track days and spirited riding.
Manufacturer Standards:
Manufactured to Buell's stringent factory quality and performance standards.
