2007–2011 Harley-Davidson Softail Twin Cam 96B (FLSTF Fat Boy)

The 2007–2011 Harley-Davidson Softail Twin Cam 96B (FLSTF Fat Boy)** represents a pivotal generation for one of the most iconic cruisers in the American manufacturer’s lineup. This period saw the introduction of a larger, more capable engine and a refined transmission, building upon the distinctive styling that had made the Fat Boy a cultural phenomenon since its debut. The model continued its legacy as a muscular, low-slung motorcycle defined by its solid disc wheels, commanding presence, and the classic Softail frame that cleverly conceals its rear suspension for a vintage “hardtail” look.

Powertrain Evolution: The Twin Cam 96B Engine

The most significant upgrade for the 2007 model year Fat Boy was the replacement of the Twin Cam 88B engine with the new Twin Cam 96B. The “96” denotes the engine’s displacement in cubic inches (1584cc), a substantial increase from the 88 cubic inches (1450cc) of its predecessor. This larger displacement resulted in a noticeable boost in torque, providing stronger acceleration and improved highway passing power.

The “B” in 96B signifies that the engine is a balanced version of the Twin Cam. Unlike the rubber-mounted engines in Harley-Davidson’s Touring and Dyna frames, the Softail family features a rigidly mounted engine. To mitigate the intense vibrations of a large V-twin bolted directly to the frame, the 96B engine incorporates a system of internal counter-balancers. This design choice allows the rider to feel the characteristic pulse of the V-twin at idle while smoothing out the ride at higher speeds, making for a more comfortable experience on longer journeys.

Paired with this new engine was the 6-speed Cruise Drive transmission, another key difference from the previous model’s 5-speed gearbox. The additional sixth gear acted as an overdrive, lowering engine RPMs at highway speeds. This not only reduced engine strain and vibration but also contributed to better fuel economy, making the 2007–2011 Fat Boy a more capable long-distance cruiser.

Chassis and Signature “Fat Boy” Design

The foundation of the FLSTF Fat Boy is the Softail frame. This design utilizes two shock absorbers mounted horizontally beneath the transmission, out of sight. This arrangement gives the motorcycle the clean, unbroken lines of a vintage rigid frame while offering the comfort and handling of modern rear suspension.

Visually, the 2007–2011 generation retained all the hallmark styling cues that define a Fat Boy. The most prominent of these are the 17-inch solid, cast aluminum “bullet hole” disc wheels, which give the bike a heavy, grounded appearance. Other defining features include:

A massive front end with a large headlight nacelle.
Wide, comfortable floorboards for the rider.
A low-slung, two-up seat.
Classic “shotgun” style over/under dual exhausts.
A fat, 5-gallon fuel tank adorned with the classic Harley-Davidson badge.

The overall aesthetic is one of substance and authority. The bike’s wide stance, fat tires, and generous use of chrome create an imposing presence that is both timeless and instantly recognizable.

Riding Characteristics of the Harley-Davidson Softail Twin Cam 96B

On the road, the 2007–2011 Fat Boy delivers a quintessential American cruiser experience. The low seat height of approximately 25 inches (laden) makes it accessible to a wide range of riders, allowing them to easily plant both feet on the ground at a stop. The riding position is relaxed and upright, with wide handlebars and forward-mounted footboards.

The Twin Cam 96B engine provides ample low-end torque, making the bike feel powerful and responsive right from idle. It is not designed for high-speed cornering, as its significant weight and limited ground clearance favor a more leisurely pace. Instead, it excels on boulevards and open highways, where its stability, comfort, and torque-rich power delivery can be fully appreciated. The bike’s substantial mass contributes to a planted, stable feel at speed, absorbing minor road imperfections with ease.

Specifications