🏷️ Basic Information

Make:

Harley-Davidson

Model:

FXDX Dyna Super Glide Sport

Year:

2003

Sub Model:

Dyna Super Glide Sport

Engine Family Code:

Dyna

👋 Introduction

Segment:

Performance Cruiser / Sport Cruiser

Target Audience:

Riders seeking a more aggressive and sporty riding experience from the Harley-Davidson Dyna platform.

Key Competitors:

Other performance-oriented cruisers of the era from brands like Yamaha (V-Star), Suzuki (Boulevard), Kawasaki (Vulcan), and potentially some American V-twin manufacturers.

Styling:

Aggressive, sporty styling with a lower profile and often dual front disc brakes.

Handling:

Designed for improved handling and cornering ability compared to standard Dyna models, often featuring stiffer suspension components.

Engine Performance:

Powered by Harley-Davidson's robust Twin Cam 88 engine, tuned for spirited performance.

📋 Manual Details

Primary Coverage:

Service, Repair, Workshop

Diagnostic Coverage:

Troubleshooting and diagnosis of all systems

Maintenance Coverage:

Scheduled maintenance, fluid changes, component inspection

Estimated Page Count:

Approximately 500-700 pages (typical for comprehensive workshop manuals)

Type:

Service and Repair Workshop Manual

Language:

English

Format:

Digital (PDF), potentially available in print

📖 Manual Coverage

Engine:

Complete engine assembly, disassembly, tuning, and overhaul of Twin Cam 88 engine variants.

Transmission:

5-speed gearbox service, repair, and adjustment.

Fuel System:

Carburetor (Keihin CV) or fuel injection system service, cleaning, and adjustments.

Electrical System:

Wiring diagrams, ignition system, lighting, charging system, starter, battery maintenance.

Suspension:

Front fork (Showabased with cartridge damping) and rear shock absorber service, adjustments, and replacement.

Brakes:

Front and rear hydraulic brake system service, caliper overhaul, pad replacement, and bleeding.

Chassis:

Frame, swingarm, steering head, and wheel bearing service.

Bodywork:

Fairing, fenders, fuel tank, seat, and controls removal and installation.

Routine Maintenance:

Oil changes, filter replacements, spark plug checks, chain adjustment (if applicable), belt inspection.

Troubleshooting:

Detailed diagnostic flowcharts for common and uncommon problems.

Rebuilding Procedures:

Complete step-by-step instructions for engine and transmission rebuilds.

Special Tool Requirements:

Lists and descriptions of specialized tools needed for specific repairs.

Torque Specifications:

Precise torque values for all critical fasteners.

Depth:

Comprehensive, covering from basic maintenance to full engine and transmission overhauls, suitable for professional mechanics and experienced DIY enthusiasts.

📊 Manual Specifications

Digital Format:

PDF (Portable Document Format)

Searchability:

Likely text-searchable PDF for efficient information retrieval.

Digital Quality:

High-resolution scans or digital-native files ensuring clarity of diagrams and text.

Print Binding:

If printed, typically spiral-bound or saddle-stitched for lay-flat usability.

Print Paper:

If printed, durable, heavy-stock paper suitable for workshop environments.

⚙️ Engine Specifications

Engine Type:

Air-cooled, 45-degree V-twin, Twin Cam 88

Displacement:

1450 cc (88 cubic inches)

Bore X Stroke:

3.75 in x 4.00 in (95.25 mm x 101.6 mm)

Compression Ratio:

8.8:1

Valve Train:

Overhead valves (OHV), 2 valves per cylinder

Horsepower:

Approximately 65-70 HP (estimated, subject to tuning and specific model variants)

Torque:

Approximately 75-80 ft-lbs (estimated, subject to tuning and specific model variants)

Carburetor:

Keihin CV (Constant Velocity) 40 mm (standard for many models of this era), or Electronic Sequential Port Fuel Injection (ESPFI) depending on specific sub-variant.

Fuel Type:

Unleaded gasoline, 91 octane (minimum recommended)

🔧 Transmission

Type:

5-speed constant mesh, helical gear

Clutch:

Wet, multi-plate, diaphragm spring

Drive Type:

Primary drive: Duplex chain; Final drive: Belt

Transmission Fluid Spec:

Harley-Davidson Formula + Transmission/Primary Chaincase Lubricant, or equivalent SAE 80W-90 gear oil.

📐 Dimensions

Length:

Approx. 91.7 inches (2329 mm)

Width:

Approx. 36.0 inches (914 mm)

Height:

Approx. 50.6 inches (1285 mm) (at handlebars)

Wheelbase:

Approx. 63.9 inches (1623 mm)

Ground Clearance:

Approx. 4.5 inches (114 mm)

Dry Weight:

Approx. 635 lbs (288 kg)

Wet Weight:

Approx. 675 lbs (306 kg) (estimated with fluids)

Gross Vehicle Weight Rating:

Not typically specified as a single GVWR, but individual load capacities for rider, passenger, and luggage are relevant.

Fuel Tank Capacity:

4.8 US gallons (18.2 L)

🛡️ Safety Features

Crash Test Ratings:

Motorcycles are not typically subjected to standardized crash testing like automobiles. Safety is assessed through design and component specifications.

Braking System:

Dual front disc brakes with 4-piston calipers and a single rear disc brake with 2-piston caliper for enhanced stopping power.

Suspension Tuning:

Tuned for stability and responsiveness, contributing to active safety during riding.

Frame Construction:

Steel cradle frame providing structural integrity.

Lighting:

Headlight, taillight, brake lights, and turn signals for visibility.

Tire Specifications:

Typically sport-oriented radial tires for optimal grip and handling.

💡 Technology Features

Audio System:

Optional factory-installed audio systems (radio, CD player) were available on some models, though less common on the sporty FXDX compared to touring variants.

ABS:

Anti-lock Braking System (ABS) was generally not standard on this model and was a rare option for Harley-Davidsons of this era.

Connectivity Features:

No integrated smartphone connectivity or Bluetooth features as standard. Communication would be via aftermarket accessories.

Headlight Type:

Halogen headlight for illumination.

🔧 Maintenance

First Service:

Typically at 1,000 miles (1,600 km) for initial break-in service (oil change, filter replacement, inspection).

Subsequent Oil Change:

Every 5,000 miles (8,000 km) or annually, whichever comes first.

Belt Check:

Inspect belt tension and condition every 5,000 miles (8,000 km).

Spark Plug Replacement:

Typically recommended every 10,000-15,000 miles (16,000-24,000 km), consult manual for specific type and interval.

Engine Oil Type:

Harley-Davidson Genuine V-Twin 20W-50 Synthetic Motorcycle Oil, or equivalent API CI-4 rated synthetic motorcycle oil.

Engine Oil Capacity:

Approximately 4 US quarts (3.8 L) with filter change.

Primary Chaincase Oil Type:

Harley-Davidson Formula + Transmission/Primary Chaincase Lubricant, or SAE 80W-90 gear oil.

Primary Chaincase Oil Capacity:

Approximately 2.7 US quarts (2.5 L).

Transmission Oil Type:

Harley-Davidson Formula + Transmission/Primary Chaincase Lubricant, or SAE 80W-90 gear oil.

Transmission Oil Capacity:

Approximately 30 fl oz (0.9 L).

Brake Fluid:

DOT 4 hydraulic brake fluid (for hydraulic clutch and brakes).

Cam Chain Tensioner:

Early Twin Cam engines (pre-2007) had plastic cam chain tensioners that could wear, requiring replacement with updated hydraulic tensioners.

Rear Wheel Bearing:

Some models may experience premature rear wheel bearing failure, especially with heavier loads or aggressive riding.

Exhaust Leaks:

Exhaust header pipe gaskets and flange nuts can sometimes loosen, leading to leaks.

Clutch Cable Adjustment:

Regular clutch cable adjustment is important for proper operation.

📚 Vehicle History

Heritage:

Harley-Davidson, founded in 1903, has a long and storied history in motorcycle manufacturing, known for its V-twin engines and iconic cruiser styling.

Dyna Platform:

The Dyna platform, introduced in 1991, was designed to offer a more modern chassis and riding experience than earlier Harley-Davidson models, bridging the gap between the rigid Sportster and the large touring models.

Fxdx Positioning:

The FXDX Dyna Super Glide Sport was positioned as the performance variant of the Dyna line, featuring upgrades like dual front disc brakes, sportier suspension, and sometimes more aggressive engine tuning.

Production Years:

The Dyna platform, including variants like the FXDX, was produced from 1991 to 2017. The FXDX specific model was available within this range, with the 2003 model year being a notable iteration.

Manufacturing Location:

Primarily manufactured in the United States by Harley-Davidson Motor Company.

🏆 Awards & Recognition

Club Recognition:

While specific 'awards' are rare for production motorcycles, the Dyna platform and its performance variants like the FXDX have garnered significant appreciation and loyalty from the Harley-Davidson enthusiast community for their blend of classic V-twin character and sporty handling.