| Component | Specification |
|---|---|
| Production Years | 2001 – 2003 |
| Engine Oil | SAE 20W50 (2.8 L) |
| Front Tire | 100/90-19 57H |
| Rear Tire | 150/80B16 71H |
| Tire Pressure (F/R) | F: 30 psi / R: 36-40 psi |
| Battery Type | 65989-97C |
| Spark Plug | HD-6R12 |
The Harley-Davidson FXDXT Dyna Super Glide T-Sport represents a pivotal moment in Milwaukee engineering, widely regarded by enthusiasts as the ‘Holy Grail’ of the Dyna family. While most cruisers of the early 2000s prioritized aesthetics, the FXDXT was a performance-first machine, featuring factory-equipped adjustable cartridge forks and adjustable rear shocks—a level of suspension sophistication that remains a benchmark for the platform today.
Engineering Overview: The Performance Bagger Original
At the heart of the FXDXT is the Twin Cam 88 engine, rubber-mounted to the Dyna chassis to mitigate vibrations while delivering the signature Harley-Davidson torque. The ‘T-Sport’ designation brought unique touring capabilities to the performance-oriented FXDX frame, including a frame-mounted fairing with an adjustable windshield and expandable nylon saddlebags. This combination created a motorcycle that could carve canyons on Saturday and cross state lines on Sunday.
Maintenance & Fluid Capacities
For the Editor-in-Chief at MotoSpecsLab, maintaining the mechanical integrity of the FXDXT is paramount. The 1450cc Twin Cam engine requires 2.8 Liters of SAE 20W50 oil. Given the heat-intensive nature of air-cooled V-twins, we recommend high-quality synthetic lubricants to preserve the valve train and cam chain tensioners—a known inspection point for this era of Harley-Davidson engines.
Chassis & Handling Specifications
The FXDXT’s superior handling is dependent on precise tire maintenance. The front 19-inch wheel should be fitted with a 100/90-19 57H tire, maintained at 30 psi (2.07 bar). The rear requires a 150/80B16 71H. Pressure settings for the rear are variable: 36 psi for solo riding and 40 psi for two-up touring or heavy luggage loads. Proper inflation is critical to prevent the ‘Dyna wobble’ and ensure the adjustable suspension performs within its intended damping range.
Electrical System & Ignition
Reliable starting is provided by the 65989-97C battery, a heavy-duty unit designed to handle the high cranking amps required by the Twin Cam 88. For ignition, the factory recommends HD-6R12 spark plugs. During routine service, gaps should be checked to ensure optimal combustion efficiency and throttle response.
MotoSpecsLab Verdict
The FXDXT remains a masterclass in functional design. It bridged the gap between the raw agility of the Dyna frame and the utility of the Touring line. For collectors and riders alike, following these technical specifications is essential for preserving the legacy of Harley-Davidson’s most versatile performance cruiser.