2012–2014 Harley-Davidson Dyna Twin Cam 103 (FXDC Super Glide Custom)

The 2012–2014 Harley-Davidson Dyna Twin Cam 103 (FXDC Super Glide Custom) is a cruiser motorcycle that was part of Harley-Davidson’s Dyna family of motorcycles. Produced for this three-year period, the FXDC Super Glide Custom represented a significant step for the model, primarily due to the standardization of the larger Twin Cam 103 engine. It was positioned as a factory custom, blending classic Harley-Davidson styling with more power and a versatile chassis, appealing to riders looking for a traditional “big twin” experience with a touch of modern performance.

History and Evolution from the Twin Cam 96

The Dyna Super Glide has a long heritage, tracing its roots back to the first factory custom, the 1971 FX Super Glide. The FXDC “Custom” variant re-emerged in the mid-2000s, but the most notable change for the platform occurred in the 2012 model year.

Prior to 2012, the Dyna Super Glide Custom was equipped with the standard Harley-Davidson Twin Cam 96 engine, which displaced 96 cubic inches (1584 cc). While a capable motor, the move to the Twin Cam 103 (103 cubic inches / 1690 cc) as the standard powerplant brought a tangible increase in performance. This upgrade was not just an option but the new baseline for the model, providing riders with more torque directly from the showroom floor. This change gave the Super Glide Custom stronger acceleration, improved passing power at highway speeds, and a more robust character that aligned with its “custom” badging.

Key Features of the 2012–2014 Harley-Davidson Dyna Twin Cam 103

Engine and Drivetrain

At the heart of the 2012–2014 FXDC is the air-cooled Twin Cam 103 V-twin engine. This engine was a significant update, featuring a displacement of 103.1 cubic inches (1690 cc). It was known for its substantial low-end torque, producing approximately 99 ft-lb at around 3,500 RPM. This power delivery made the bike feel responsive and strong in typical riding scenarios, such as accelerating from a stoplight or rolling on the throttle to overtake traffic.

The engine was rubber-mounted to the frame, a hallmark of the Dyna platform. This design isolated the rider from the majority of the engine’s vibrations at cruising speeds, while still allowing the characteristic Harley-Davidson shake to be felt at idle. The engine was paired with the 6-speed Cruise Drive transmission, which provided smooth shifting and a low-RPM sixth gear for relaxed highway cruising. Power was delivered to the rear wheel via a clean and low-maintenance belt drive system.

Chassis and Handling

The Dyna platform was renowned for its handling capabilities within the Harley-Davidson lineup. The FXDC used a tubular steel frame with exposed dual coil-over shock absorbers at the rear, a defining visual and functional feature of the Dyna family. The front suspension consisted of a 49mm conventional telescopic fork.

While not a sportbike, the Super Glide Custom was considered an agile and well-balanced cruiser. Its mid-mounted foot controls and mini ape-hanger handlebars provided a comfortable, upright riding position that was suitable for both short trips around town and longer journeys. The single-disc front and rear brakes provided adequate stopping power for a bike of its size and class.

Styling and Ergonomics

The “Custom” designation of the FXDC was reflected in its distinctive styling cues. It featured a blend of blacked-out and chrome components that set it apart from other models in the Dyna line. Key visual elements included:

Chrome Steel Laced Wheels: A classic look with a 19-inch front and 17-inch rear wheel.
Two-Up Ribbed Seat: Designed for both rider and passenger comfort.
Tank-Mounted Console: A chrome console housed the speedometer and ignition switch, mounted on a classic “Fat Bob” fuel tank.
Polished Finishes: Abundant chrome on the powertrain, battery box cover, and other details contributed to its custom aesthetic.

This combination of features gave the FXDC Super Glide Custom a timeless appeal that resonated with riders who appreciated traditional cruiser styling but desired the added performance of the 103 cubic-inch engine. Following the 2014 model year, the Super Glide Custom was discontinued as Harley-Davidson began to streamline its Dyna lineup, eventually merging the entire platform into the new Softail frame for the 2018 model year.

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Specifications: 2012–2014 Harley-Davidson Dyna Super Glide Custom (FXDC)