The Harley-Davidson Super Glide (FXD) holds a unique place in motorcycling history as the direct descendant of the 1971 FX Night Train, the first ‘factory custom.’ However, the 1995–2010 Dyna era represents the platform’s engineering peak, utilizing a computer-designed frame and a distinct two-point rubber-mounting system that isolated engine vibration while maintaining a rigid connection for high-speed stability.
| Specification | Data |
|---|---|
| Model Years | 1995–2010 |
| Engine Oil | 20W50 Harley-Davidson 360 (2.8 L) |
| Front Tire | 100/90-19 57H |
| Rear Tire (1995–2005) | 130/90-B16 73H |
| Rear Tire (2006–2010) | 160/70-B17 73V |
| Tire Pressure | F: 30 psi / R: 40 psi |
| Battery | 65989-97C |
| Spark Plugs | HD-5R6A (’95-’98) / HD-6R12 (’99-’10) |
Engineering Evolution: From Evolution to Twin Cam
The FXD Super Glide transitioned through three major powertrain phases during this period. From 1995 to 1998, it featured the 80-cubic-inch Evolution (Evo) engine, prized for its simplicity and single-cam reliability. In 1999, the Dyna received the Twin Cam 88 (1450cc), which introduced significantly higher torque but required vigilance regarding the spring-loaded cam chain tensioners.
The most significant chassis overhaul occurred in 2006. This year marked the introduction of the 6-speed Cruise Drive transmission, a stiffer 49mm front fork (replacing the 39mm units), and a wider 160mm rear tire. By 2007, the Twin Cam 96 (1584cc) became standard, bringing Electronic Sequential Port Fuel Injection (ESPFI) to the entire lineup.
Maintenance Insights
Lubrication System
The FXD uses a dry-sump lubrication system. For optimal performance across varying temperatures, MotoSpecsLab recommends 2.8 Liters of 20W50 Harley-Davidson 360. Owners should check oil levels while the engine is at operating temperature and the bike is resting on its jiffy stand (side stand).
Chassis and Tires
Tire selection is critical for the Dyna’s handling characteristics. Models produced between 1995 and 2005 utilize a narrower 130mm rear tire, offering quicker turn-in response. The 2006-2010 models moved to a 170mm-wide rim profile (standard with 160mm tires), which improved straight-line stability at the cost of some flickability. Maintain 30 psi (Front) and 40 psi (Rear) to prevent cupping and ensure casing longevity.
Electrical System
The 65989-97C battery is the standard high-cranking-amp unit required to turn over the high-compression V-twin. For the 1999+ Twin Cam models, ensure you use the HD-6R12 spark plugs, as they are specifically indexed for the combustion chamber geometry of the dual-cam heads.
MotoSpecsLab Verdict
The Dyna Super Glide FXD remains the ‘purist’s Harley.’ It lacks the chrome excess of the Low Rider or the forward-control stretch of the Wide Glide, offering instead a balanced, mid-control riding position that allows the rider to leverage the Dyna frame’s superior cornering clearance. For the technician, the 2006-2010 models are the most desirable due to the upgraded charging system and robust 49mm front end.