2012 · Cruiser · Buyer's Guide
The Original Fat Custom Icon
The Fat Boy set the template for the fat custom, and this generation wears it with total conviction. Under the tank sits the air-cooled 1690 cc Twin Cam 103B, a 45° V-twin rated at 78 hp and a meaty 99 lb-ft that peaks low at 3,000 rpm. The six-speed Cruise Drive gearbox keeps highway revs calm. Solid bullet-hole cast aluminum wheels, a fat 200-section rear, wide internally-wired bars, and hidden horizontal shocks faking a hardtail line give it presence you read from across a parking lot. Style and charisma are where this bike earns its keep.
On the road it delivers exactly what the stance promises: low, planted, and happiest holding a steady line at speed, where its high-speed stability really shows. The 25.0-inch seat and low center of gravity make 728 lb (330 kg) feel manageable at a standstill, though there's no hiding that weight when you thread through tight streets. Build quality is genuinely high, and the aftermarket for this platform is enormous, so it ages into whatever you want it to be. This is a bike for riders who buy the feeling first. If you want light, flickable, and urban-nimble, look elsewhere.
Spec sheets don't ride bikes, but they set the baseline.
| Power | 78 hp (58 kW) |
|---|---|
| Torque | 99 lb-ft (134 Nm) @ 3,000 rpm |
| Displacement | 1690 cc |
| Engine | 45° V-twin |
| Cooling | Air-cooled |
| Gearbox | 6-speed |
| Front tire | 140/75 R17 |
| Rear tire | 200/55 R17 |
| Seat height | 25.0 in (635 mm) |
| Wet weight | 728 lb (330 kg) |
| Fuel capacity | 5.0 gal (18.9 L) |
Equipment check
Safety
Thumb the starter and the big V-twin settles into that uneven, loping idle you feel through the tank and floorboards before you really hear it. Pull away and the sound deepens into the rumble this engine is known for. The riding position is pure boulevard: full-size footboards let you stretch out, the deep seat cradles you, and the wide bars put your hands out where you steer with your shoulders. There's a pleasant liveliness through the grips down low that smooths out once you settle into a cruise, so long highway stretches don't beat you up. At road pace it feels big and deliberate, the kind of bike that rewards a relaxed wrist and long sightlines over quick direction changes. You sit in it, not on it, and that changes how the miles feel.
Front brake master cylinder corrosion recall
The threads for the front brake master cylinder's brake-line banjo bolt can corrode, which may cause a sudden loss of brake fluid and a loss of the front brake. A recall (NHTSA 14V794000) was issued to flush and inspect the front brake master cylinder and replace it if necessary.
Inner cam bearings and lifters may be weak point
The Twin Cam 103B engine uses caged-style inner cam bearings (INA B-168) and 'C' lifters, which are considered substandard compared to aftermarket alternatives. Upgrading to captive needle bearings and better lifters is common when servicing the cam chest.
Where this Harley-Davidson Softail Fat Boy FLSTF pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.
Power
Torque
Displacement
Wet weight
Seat height
Forget spec-sheet bragging. Here's who the Softail Fat Boy FLSTF is actually built for.
If Sturgis and Daytona are on your calendar and you want a bike that speaks the language of sound, presence, and Harley heritage, the Fat Boy was built for exactly this. It looks and sounds the part everywhere you park it.
Made for A1A — Florida Atlantic Coast · Black Hills / Sturgis Rally Hub · Daytona Main Street / Bike Week
For historic routes and easy days between small towns, the Fat Boy delivers the classic style and relaxed rhythm you're after. Just know it's a heavyweight cruiser, not a nimble modern classic, so plan for its size.
Made for Acadia National Park · Austin / Handbuilt Motorcycle Show · Blue Ridge Parkway
It covers big miles in comfort with that deep seat and stable highway manners, and the low seat helps at every stop. But with a 5.0-gal (18.9 L) tank and no touring bodywork, long two-up days take more planning.
Made for Beartooth Highway · Blue Ridge Parkway · Going-to-the-Sun Road
If you're cross-shopping the older generation, here's what changed.
Previous generation · 2010–2011
Disc Wheels, Genuine American Thunder
Compare to the previous model →