HARLEY-DAVIDSON
2000 - 2006 HARLEY-DAVIDSON SOFTAIL FAT BOY

SOFTAIL FAT BOY (2000 - 2006)

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Harley-Davidson Softail Fat Boy [2007-2017]: A Timeless Cruiser Legacy

Introduction

The Harley-Davidson Softail Fat Boy is more than a motorcycle—it’s a cultural icon. From its Hollywood debut in Terminator 2 to its status as a symbol of American cruiser design, the Fat Boy (2007–2017) embodies raw power, minimalist aesthetics, and an unmistakable road presence. As part of Harley’s Softail family, this generation blended retro styling with modern engineering, offering riders a machine that feels both nostalgic and capable. Having spent a week with a 2016 Fat Boy Lo, I’m here to break down why this bike remains a cornerstone of cruiser culture—and how it holds up against its rivals.


Design & Styling: Industrial Art on Two Wheels

The Fat Boy Aesthetic

The Fat Boy’s design is unapologetically bold. Its signature elements—the solid “Lakester” wheels (later replaced by Bullet Hole Disc Cast Aluminum), chunky 140/75-R17 front and 200/55-R17 rear tires, and slammed silhouette—create a muscular, ground-hugging profile. The 2013–2017 models leaned into denim finishes (Charcoal Denim, Black Denim) and satin chrome accents, giving the bike a rugged, factory-custom look. The over/under shotgun exhaust, a staple of this generation, adds visual symmetry and a throaty rumble.

Ergonomics & Comfort

With a seat height as low as 616 mm (24.3 inches) on the Fat Boy Lo variants, the bike welcomes riders of all statures. The forward-mounted controls and wide, pullback handlebars create a relaxed riding triangle, though taller riders might find the legroom snug on long rides. The two-up seat is plush but firm—ideal for hour-long cruises, but you’ll want an aftermarket cushion for cross-country trips. The tank-mounted gauge cluster keeps the cockpit clean, though its small font can be tricky to read at a glance.


Engine & Performance: Torque is the Name of the Game

Twin Cam 103B: Heart of the Beast

The 1688cc (103 cubic inch) air-cooled V-twin dominates the Fat Boy’s character. In most models, it delivers 132–136 Nm (97–100 lb-ft) of torque at 3,000 RPM—enough to push its 319–333 kg (703–734 lbs) frame with authority. Throttle response is immediate, and the 6-speed transmission’s tall gearing keeps the engine relaxed at highway speeds. While horsepower figures hover around 75–78 HP, this bike isn’t about top speed; it’s about the visceral pull from stoplights and the satisfying lope at idle.

Riding Dynamics

The Fat Boy’s weight disappears once moving, but低速 maneuvers demand respect. The 31.6° rake and 147 mm (5.8 inches) of trail provide stability at speed, though the suspension (41mm telescopic fork up front, twin shocks at the rear) leans toward stiffness. Rough roads send jolts through the chassis, but that’s the trade-off for eliminating the “bobber bounce” of traditional hardtails. ABS, introduced in later models, adds confidence during hard braking, though the dual 4-piston front calipers require a hearty squeeze.

Fuel Efficiency & Range

Despite its size, the Fat Boy sips fuel at 5.6 L/100 km (42 mpg), translating to a 300–330 km (186–205 mi) range from its 18.9L (5-gallon) tank. For a cruiser of this heft, that’s commendable—though you’ll still be stopping more often than on a modern touring rig.


Competition: How the Fat Boy Stacks Up

1. Indian Chief Classic

The Chief Classic rivals the Fat Boy with its retro styling and 1,811cc Thunder Stroke V-twin. While the Indian offers smoother suspension and a more refined ride, it lacks the Fat Boy’s iconic visual punch. Harley’s aftermarket support also dwarfs Indian’s, making customization easier and cheaper.

2. Honda Fury

Honda’s Fury leans into radical chopper aesthetics with a 1,312cc V-twin. It’s lighter and nimbler than the Fat Boy but sacrifices low-end torque and that signature Harley rumble. The Fury’s niche appeal can’t match the Fat Boy’s timeless design.

3. Yamaha V-Star 1300

A budget-friendly alternative, the V-Star 1300 offers liquid cooling and a lower price tag. However, its 80 HP engine feels anemic compared to the Fat Boy’s torque-rich Twin Cam, and the build quality doesn’t scream “heirloom piece” like the Harley.

Verdict: The Fat Boy wins on heritage, customization potential, and sheer road presence. Its competitors either compromise on power or fail to deliver that visceral Harley-Davidson “feel.”


Ownership Experience: The Daily Grind

City vs. Highway

In urban settings, the Fat Boy’s weight and wide bars make filtering tricky, but the low seat aids confidence at stops. On the open road, it’s in its element—planted, stable, and unfazed by crosswinds. The lack of wind protection becomes glaring above 110 km/h (68 mph), so a retrofit windshield is a wise investment.

Vibrations: Love It or Hate It

The Twin Cam’s vibrations at idle are part of its charm, but at highway RPMs, they can numb your hands. Rubber-mounted handlebars on later models help, but grip puppies or heavier bar ends are worth considering.


Maintenance: Keeping the Legend Alive

Key Service Points

  • Oil Changes: Every 8,000 km (5,000 mi) using SAE 20W-50 (3.3L with filter).
  • Primary Chain: Inspect tension every 16,000 km (10,000 mi).
  • Belt Drive: Low-maintenance but check for cracks/debris regularly.
  • Tire Pressure: 2.5 bar (36 psi) front / 2.9 bar (42 psi) rear—critical given the bike’s weight.

Common Upgrades

  1. Suspension: Progressive Suspension 444 series shocks improve ride quality.
  2. Exhaust: Vance & Hines Twin Slash slip-ons amplify the V-twin growl.
  3. Seat: Mustang Solo or Sundowner seats add long-distance comfort.

Pro Tip: The Twin Cam’s hydraulic lifters eliminate valve adjustments—a boon for DIYers.


Conclusion: A Modern Classic

The 2007–2017 Softail Fat Boy isn’t perfect. It’s heavy, it vibrates, and its tech is rudimentary by today’s standards. But that’s missing the point. This bike is about soul—the way it looks parked outside a diner, the thunderclap of its exhaust, and the camaraderie of owning a piece of motorcycling history. For riders seeking a blank canvas to build their dream cruiser, few platforms match the Fat Boy’s potential.

At MOTOPARTS.store, we’ve got the gear to make your Fat Boy truly yours—from performance upgrades to vintage-inspired accessories. Ride hard, customize harder.




Specifications sheet

Engine
Stroke: Four-stroke
Max power: 92 kW | 123.0 hp
Max torque: 146 Nm
Fuel system: Electronic Sequential Port Fuel Injection (ESPFI)
Max power @: 5250 rpm
Displacement: 1690 ccm
Max torque @: 4000 rpm
Bore x stroke: 98.4 x 111.3 mm (3.9 x 4.4 in)
Configuration: V
Engine details: Twin Cam 103B™ or Screamin’ Eagle® Twin Cam 110B (1801 cc models)
Compression ratio: 10.0:1
Number of cylinders: 2
Dimensions
Wheelbase: 1638 mm (64.5 in)
Dry weight: 320
Wet weight: 333
Seat height: 616-690 mm (24.3-27.2 in)
Overall length: 2395 mm (94.3 in)
Ground clearance: 122-130 mm (4.8-5.1 in)
Fuel tank capacity: 18.9 L (5.0 US gal)
Drivetrain
Final drive: belt
Transmission: 6-speed
Primary drive ratio: 34/46
Maintenance
Rear tire: 200/55-17
Engine oil: 20W50
Front tire: 140/75-17
Break fluid: DOT 4
Spark plugs: NGK DCPR7E or NGK DCPR7EIX
Spark plug gap: 1.0
Transmission oil: 950 ml SAE 80W-90
Primary drive oil: 950 ml
Forks oil capacity: 0.792
Engine oil capacity: 3.3
Engine oil change interval: Every 5000 km or 2 years
Valve clearance check interval: Not required (hydraulic lifters)
Recommended tire pressure (rear): 2.9 bar (42 psi)
Recommended tire pressure (front): 2.5 bar (36 psi)
Additional Notes
Wheel options: Bullet Hole Disc Cast Aluminum in black/chrome
Special models: Screamin’ Eagle® models feature 1801 cc engine (92.5 HP/67.2 kW)
ABS availability: Standard on later models (2014+)
Chassis and Suspension
Frame: Mild steel tubular frame
Trail: 147 mm (5.8 in)
Rear brakes: Single disc, 2-piston caliper (ABS on some models)
Front brakes: Double disc, 4-piston calipers (ABS on some models)
Rear suspension: Twin shocks, hidden horizontal-mounted coil-over
Front suspension: 41.3 mm telescopic fork
Rake (fork angle): 31.6°
Rear wheel travel: 109 mm (4.3 in)
Front wheel travel: 130 mm (5.1 in)






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