Classic and Classy Motorcycles Ltd

Historical Context

Introduced in 1971, the Harley-Davidson Super Glide was one of the earliest factory custom motorcycles, designed to appeal to riders who were customizing their bikes with aftermarket parts and performance upgrades. The FXS variant brought a more aggressive, street-oriented style to the FX line, blending the FLH’s big-twin Shovelhead powerplant with narrower forks and lighter styling borrowed from the XL Sportster. By 1981, Harley-Davidson—still under AMF ownership—had refined the FXS into a rugged, road-ready cruiser with a tough stance, making it one of the most respected Harley models of the era.

Technical Specifications and Features

• Year: 1981
• Make: Harley-Davidson
• Model: FXS Super Glide
• Engine Displacement: 1340cc (80 cubic inches)
• Engine Type: Air-cooled, 45-degree Shovelhead V-twin
• Compression Ratio: 8.0:1
• Power Output: Approximately 60 horsepower
• Torque: 65–70 lb-ft
• Transmission: 4-speed manual
• Brakes: Disc front and rear
• Fuel System: Carbureted
• Fuel Capacity: 3.5 gallons
• Wheelbase: Approx. 60 inches
• Dry Weight: Approximately 580 pounds
• Key Features: Fat Bob split tanks, mag wheels, low-rise handlebars, stepped seat, and both electric and kick-start options.

Project Potential

The 1981 FXS Super Glide is a prized candidate for both original restorations and period-correct custom builds. Many bikes from this era have seen modifications, and restoring them back to their factory configuration—chrome detailing, correct tank badges, original paint schemes—adds substantial value and appeal. For customizers, the FXS platform is incredibly versatile. With the rugged Shovelhead motor and timeless frame geometry, it's a popular base for bobbers, choppers, and club-style builds. Parts availability for the FX series and Shovelhead engine is strong, with both NOS and aftermarket options readily accessible.

Riding Experience

When brought back to life, the 1981 Super Glide delivers a visceral riding experience that embodies Harley-Davidson’s big twin legacy. The 80ci Shovelhead offers strong low-end grunt, making it ideal for cruising or highway pulling. The mechanical 4-speed gearbox has a deliberate feel that adds to the riding character. With a lower center of gravity and responsive mid-controls, the FXS handles city traffic and backroad cruising with ease. Disc brakes front and rear provide solid stopping power for a bike of this era, and the suspension—while basic—delivers a comfortable, classic cruiser ride.

Legacy and Collectibility

The FXS Super Glide holds a foundational place in Harley-Davidson’s history as the original factory custom. The 1981 model year represents one of the final iterations before major design changes in the mid-1980s, making it an increasingly collectible Shovelhead. It carries the DNA of the FX line that influenced models for decades, and its blend of stripped-down style and big twin power remains highly desirable among vintage Harley enthusiasts. A restored or well-preserved FXS is not just a motorcycle—it’s a piece of the American custom culture that Harley helped define.