Harley Fat Bob vs. Fat Boy: Which Makes You Special?

Fat Bobs and Fat Boys are the classic examples of American-made badassery when it comes to making a statement. With a pump to the brightwork, both were revised for Harley Davidson’s lineup.

Harley Davidson has chrome on everything from the headlight nacelle to the fork tubes, then the tank console to the exhaust, as well as the engine and handlebars. And yes, both Harley Fat Bob and Fat Boy have all popular specifications.

Harley Fat Bob Vs. Fat Boy, which one is more aggressive over others? I’ll say both are acceptable. When purchasing, one must focus on personal requirements. Well, let’s observe the main key differences below.

Harley Fat Bob Vs. Fat Boy: Comparison Shortly:


Harley Fat BobHarley Fat Boy
Overall Length:- 92.1 inches93.3 inches
Trail:- 5.2 inches4.1 inches
Seat height :- 27.7 inches 25.9 inches
Rake:- 2830
Wheelbase:- 63.6 inches65.6 inches
Ground clearance:- 4.7 inches4.5 inches
Shipped weight:- 653 lb.671 lb.
Running order of weight:- 676 lb. 699 lb.
Oil capability:- 5 qt.5 qt.
Fuel capability:- 3.6 gallon5 gallon
Front tire:- 150/ 80-16/ 71H/ BW160/ 60R18/ 70V/ BW
Rear tire:- 180/ 70B16/ 77H/ BW 240/40R18/ 79V/ BW


Harley Fat BobHarley Fat Boy
Transmission type:- ManualManual
Emission Type:- BS6BS6
Gears:- 6- Speed6- Speed
Fuel type:- PetrolPetrol
Drive type:- Chain DriveBelt drive
Engine:- 1868 cc1745 cc
Tail light:- LEDLED
Tyre type:- TubelessTubeless
Wheels type:- AlloyCast Aluminum
2 valve per cylinder4 valve per cylinder


Harley Fat BobHarley Fat Boy
Front wheel:- Denim black, laser etched graphics on an aluminum structureMachined, Lakester aluminum cast
Rear wheel:- Denim black, laser etched graphics on an aluminum structureMachined, Lakester aluminum cast
Front brakes:- Fixed with 4-pistonsFixed with 4-pistons
Rear brakes:-  Floating with 2-pistonsFloating with 2-pistons
Color:- Vivid black, deadwood green denim and billiard redColor:- Vivid black, deadwood green, black jack metallic, and vivid black/gauntlet gray metallics


Harley Fat BobHarley Fat Boy
Engine:- Milwaukee-Eight 114Milwaukee-Eight 114
Engine Torque:- 118 lbs-ft, 3000 RPM119 lbs-ft, 3000 RPM
System for fuel:- Fuel Injection with Sequential Ports (ESPFI)Fuel Injection with Sequential Ports (ESPFI)
Bore, Stroke:- 4.016 in and 4.5 in4.016 in and 4.5 in
Displacement:- 114 cu in.114 cu in.
Ratio of compression:- 10.5:110.5:1
Starter:- Electric Electric
Exhaust:- Shotgun with 2-into-2 offsets; muffler with catalystShotgun with 2-into-2 offsets; muffler with catalyst


Harley Fat BobHarley Fat Boy
Test method for engine torque:- J1349  J1349
Engine torque:- 118, ft-lb119, ft-lb
Torque at RPM:- 35003000
Right lean angle: 31 degrees25.6 degrees
Left lean angle:- 32 degrees25.6 degrees
Fuel economy:- 47 mpg47 mpg
Fuel economy test method:- Estimate Hwy/cityEstimate Hwy/city  

Harley Fat Bob Vs. Fat Boy: More In-Depth Discussion:

There’s nothing like the Harley-Davidson Fat Boy, equipped with a Milwaukee-Eight 114 engine and Lakester wheels made of solid aluminum. Fat Boy’s 30th Anniversary was tested by many people last year and is practically equivalent to Fat Boy 2021- it has a few cosmetic changes.

The latest Fat Bob from the Softail family is long, low, and imposing, as it has been completely redesigned in recent years. This model was a combination of the Softail and Dyna families with an improved Milwaukee-Eight engine. For Harley’s 115th anniversary, both in 107 and 114.


Fat Bob’s accelerated and decelerated more progressively through its closed-loop ESPFI system. Despite being mainly used to operate, the 6-speed Cruise Drive transmission makes the most of the ample torque and helps to reduce gear changes. Models of the Dyna series are constructed of steel tubes with a thick, rectangular backbone which provides some degree of rigidity.

Among the Softail lineup is the Fat Boy 114, which is a member of the Slim-line. Therefore, all Softail models have a vintage hardtail frame style. This bike features modern amenities such as Showa Dual Control Valve Forks and a mono-shock with an adjustable spring preload. There are also chrome fork covers on the ’21 model.


Fat Bob was available in two formats when it was launched – 107 and 114. Milwaukee-Eight engines have a displacement of 1745cc or 1868cc in inches. Currently, the larger 114 is the only engine available. The vehicle’s fuel efficiency is 47 mpg, and its left and right angles are both 25.6 degrees.

The Fat Boy is built around the corners with a rigid steel frame, thick 49mm fork legs, and a chassis designed to handle the corners well. Dyna gives you 98.8 ft/lbs of torque from its Twin-Cam 103 V-Twin engine. Featured chrome drag-type handlebars with a 1.25-inch diameter and black risers are internally wired. With a fuel economy of 47 mpg, the left and right angles are usually 25.6 degrees.


Ride the Fat Bob, and you’ll be surprised at how comfortable it is. It looks thin, but it’s incredibly supportive and comfortable. It has well-positioned handlebars and beefy grips (like the rest of the bike). It gives you a great sense of heft, as well as giving you a handy lever for turning the bike. Whether they’re too short or too far inboard on the handlebars, the stock mirrors on the Fat Bob are too short. To see more than my shoulders and forearms, you can spend more hours joking around with them.

Starting with the now chrome LED headlight nacelle, the Fat Boy 114 has a commanding appearance when it arrives on the scene. Solid 18-inch aluminum Lakester wheels return, mounted on massive 240mm front and 160mm rear tires, which are enhanced by trimmed fenders. As an added touch, there is a “bullet hole” chrome console on the console that represents the 5-gallon fuel tank.


Fat Bob’s engine is capable of 94.00 HP peak output, a torque peak of 155.00 Nm (114.33 ft-lbs or 15.8 kgf-m) at 3000 RPM. It receives 119 pounds-feet of torque from its 1,584cc V-twin engine, a shotgun with 2-into-2 offsets, and a catalyst-equipped exhaust. This large-displacement, air-cooled twin features a matte black paint job and polished fins.

This Harley-Davidson Fat Boy is equipped with Milwaukee-Eight’s 114 V-twin engine, a 6-speed transmission, and a claimed 119 ft-lbs of torque. The Fat Boy’s 2-into-2 offset shotgun exhaust is now chrome, along with a chrome Ventilator air filter that proudly displays the 114 badges. In addition to these changes, the new Fat Boy includes polished or chromed engine covers and rocker covers, replacing satin chrome finishes from the previous model.

Price Comparison

Finally, there is a difference in the price of about $2000 between the two. It costs $18,799 to purchase Fat Bob, while Fat Boy costs $20,599. In Vivid Black, the 2021 Harley-Davidson Fat Boy costs $19,999. For an additional $400, you may also choose Deadwood Green and Black Jack Metallic, as well as Vivid Black or Gauntlet Gray Metallic (additional $750). Harley-Davidson models, like all other motorcycles, have a price tag that is very much determined by condition, mileage, and accessories.

Harley Fat Bob Vs. Fat Boy, which one provides a better ride?

Harley Fat Bob Vs. Fat Boy, both have great positions in their own way. They are known as “dressers” or “baggers,” Both touring bikes and have twin-cylinder engines and telescopic forks with large diameters. In the end, both boil down to rider preference. If you want a relaxed chrome-laden mile-muncher, go for the Fat Boy, and if you prefer an American made sports cruiser, go for the Fat Bob.


Is Fat Bob Good for beginners?

Because of its relatively light-weight and limited distractions on the way, it may just be the best first motorcycle. It looks awesome, handles great, and is comfortable and easy to ride.

What Harley-Davidson has the most power?

That would be the CVO Road Glide. The factory only offers the air-cooled or oil-cooled 117-inch V-twin motor on CVO motorcycles, making it Harley’s most powerful engine. In an ideal world, this 1,923cc monster would generate 105 horsepower and 125 lb-ft of torque.

Why do they call it a Fat Bob?

Heritage. A Fat Bob was introduced in 1979 by Harley-Davidson, having a name derived from Fat, referring to the size of the twin tanks, and Bob, referring to the cut-off fenders.

Which is better, Dyna or Softail?

With the Dyna, you can handle corners and steer better. Likewise, the Softail is best suited to one rider or to a lighter load, while the Harley is best suited to two individuals. In addition, the Dyna is cheaper. Whatever model one chooses, both bikes are effective, fun, and fast.


Harley Fat Bob Vs. Fat Boy has significant differences in style when compared. Additionally, the Fat Bob features adjustable shocks, enhanced handling, and a more direct ride. Despite the fact that both bikes use a similar powertrain, the Fat Bob has a more dynamic design thanks to its updated chassis, riding stance, and overall geometry. There are technical differences between the Fat Bob and Fat Boy, such as the rubber-mounted engine versus the solid-mounted engine. Lastly, preference is not only determined by your choice but also relies on affordability and highland riding.

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