The Fat Bob saw a complete do-over in 2018, so if you rode it before and weren't impressed, know that you haven't ridden this Fat Bob. Heavily bobbed and blacked-out, the Harley-Davidson Fat Bob came with a choice of engines -- the 107-inch Milwaukee-Eight or the 114-inch version – up until 2020 when only the 114 was carried forward. These grunty powerplants, along with a (relatively) sporty new suspension system from the redesign in 2018 give the Fat Bob an aggressive bent meant to appeal to a younger generation of rider.

Harley-Davidson Fat Bob Performance and Capability

I'm told that black is very slimming, and this is true with the blackout Mil-8 engines that seem to blend into the background, case-in-point on the Fat Bob. These engines are big enough to have smaller engines in orbit around them. I mean, they're a real chunk, but they'd have to be able to contain that displacement, yeah? The 107 cubic-inch version runs a 100 mm bore and 111 mm stroke while the 114 has a 102 mm bore and 114.3 mm stroke with a 10-to-1 and 10.5-to-1 compression ratio, respectively.

Electronic fuel injection delivers the dino-juice, but we still have nothing in the way of TC or variable power delivery and that's getting harder to forgive as we see relatively inexpensive imports coming in with all that and more. Even Indian Motorcycle under the Polaris umbrella, is bringing in rider modes, so it's just a matter of time.

Always torquey, the Mil-8 plants take H-D engines to a new level with 107 pound-feet of torque from the 107 and 118 pounds from the 114. Not only does this give you the stump-pulling power you expect, but it also provides the strongest roll-on in both fifth and sixth gear, so you can make passes with more authority than ever.

The six-speed transmixxer crunches the ratios and sends power to the rear wheel via a quiet belt drive that is not only tough (I've yet to break one, personally) but easy to maintain. A balancer in the engine helps attenuate much of the engine vibration. It shakes a bit at idle (as it should) but as soon as you crack the throttle it smooths right out. Perhaps too much? Maybe, but you'll get used to it.

Engine & Drivetrain

Model:

Fat Bob

Fat Bob 114

Engine:

Milwaukee-Eight® 107

Milwaukee-Eight® 114

Bore x Stroke:

3.937 in. x 4.374 in.

4.016 in. x 4.5 in.

Displacement:

107 cu in

114 cu in

Compression Ratio:

10.0:1

10.5:1

Engine Torque (J1349):

107 lb-ft @ 3,500 rpm

118 lb-ft @ 3,500 rpm

Fuel System:

Electronic Sequential Port Fuel Injection (ESPFI)

Electronic Sequential Port Fuel Injection (ESPFI)

Exhaust:

2-into-1-into-2 dual side; catalyst in header

2-into-1-into-2 dual side; catalyst in header

Primary Drive:

Chain, 34/46 ratio

Chain, 34/46 ratio

Gear Ratios (overall):

1st: 9.311, 2nd: 6.454, 3rd: 4.793, 4th: 3.882, 5th: 3.307, 6th: 2.79

1st: 9.311, 2nd: 6.454, 3rd: 4.793, 4th: 3.882, 5th: 3.307, 6th: 2.79

Design

Harley-Davidson's Fat Bob is one of only a few Dyna models that made the crossover into the all-new-in-2018 Softail lineup. Its popularity as an FXD played heavily into that decision, and it looks like the factory is doubling down on more of the same modern-custom/bobber vibe that endeared it to its fans.

Obviously, the move from the FXD frame to the FXST brings with it a host of changes. As with the other Softails, there is a certain amount of age-ambiguity with the Fat Bob's lines by virtue of its faux-hardtail frame that cuts an entirely different figure altogether. While the previous-gen had a definite '60s to '70s vibe to it, the lines of the new-gen could hail back as far as 1949, or as recently as 1984 when the original Softail was launched.

Harley reached into custom territory yet again, but this time, it was going for an entirely modern look rather than shooting for the custom culture of yesteryear as it did with the Softail Slim, for instance. The fenders cut back to the bone and the absolute limits of functionality, with the Yamaka-size front fender and rear fender that just barely catches the struts for an unimpeded view of the rear hoop.

A tapered p-pad joins the solo saddle for two-up capability, at least on paper. Yeah, it looks cool, but you won't want to put anyone on it that you care about very much.

The peculiar twin-headlight setup makes way for a modern interpretation of the classic headlight nacelle that uses a trapezoid-shaped opening to house a set of powerful LED headlights. Blackout treatment makes it onto this newfangled nacelle that all but disappears against the blackdrop of the risers, bar, mirrors, tripletree, and inverted fork stanchions.

When the factory shoehorned the Mil-8 engine into the frame, it dropped the much-maligned “ham-can” air cleaner in favor of a smaller round breather that shares the blackout treatment and chrome trim with the engine for a nice continuity of design that also gives your right leg a little break. Sportster and old-school Big-Twin riders, you know what I'm talking about.

An upswept exhaust system comes with full-length heat shielding with a kick at the muffler end that lends the Fat Bob a certain air of performance even if the forward controls are actually the limiting factor to cornering. That said, maximum lean angles have increased with 31 degrees of lean to the right, and 32 to the left, so it will lean further than most cruiser riders are willing to go. Only a true fiery-eyed pegdragger is likely to run into clearance issues in the sweeps on this thing.

Dimensions & Capacities

Length:

92.1 in.

Seat Height, Laden:

27.7 in.

Seat Height, Unladen:

28 in.

Ground Clearance:

4.7 in.

Wheelbase:

63.6 in.

Fuel Capacity:

3.6 gal.

Fuel Economy: Estimated City/Hwy:

47 mpg

Oil Capacity (w/filter):

5 qt.

Dry Weight:

653 lb.

Curb Weight:

673 lb. (114: 676 lb.)

Top Speed:

110 mph (est)

Chassis

On the Fat Bob, tubular-steel members make up the all-new-in-2018 Softail frame just as they always have. In the first update since Y2K and the largest change since its 1984 release, the factory chopped out 50-percent of the frame members while managing to increase stiffness and handling.

That last is a pretty big deal since Softails had a poor reputation for handling and cornering performance, so anything that adds some fun and comfort is a good thing. The steering head kicks the forks out to 28 degrees for a bit of rake, and 5.2 inches of trail, so along with the newfound agility you can still count on a certain amount of stability with decent tracking.

Up front, inverted forks further bolster the sporty looks of the bike while providing greater strength and better damping profiles. Unfortunately, come sans adjustment so they are almost as vanilla as ever.

The rear mono-shock rides under the seat with a hand-adjustable preload feature that allows for easier adjustments than we had back in the day. With the old under-tranny shocks, you had to get down and wallow around with a spanner every time you had to adjust for changing cargo and passenger weight.

Blackout rims mount the 16-inch hoops with a fat 150/80 up front and 180/70 out back, and though I think laced rims might look a bit better, it probably wouldn't matter given that the dual front brake discs all but completely occlude the spokes. ABS was optional on the 107 models but carries forward as standard equipment on the 114, and Harley left its linked-brakes business where it belongs, on the shelf.

Harley Fat Bob 114 seat height rides at 28 inches off the deck. It's a skosh tall for a Softail, but still lower than most cruiser imports.

Chassis & Suspension

Frame:

Mild steel, tubular frame; rectangular section backbone; stamped, cast, and forged junctions; MIG welded; aluminum forged fender supports

Swingarm:

Mild steel, tubular sections, stamped x-member, forged axle junctions; MIG welded; removable belt spacer

Suspension, Front/ Travel:

Single cartridge 43 mm inverted with aluminum fork triple clamps; triple rate spring/ 5.1 in. (130 mm)

Suspension, Rear/ Travel:

Hidden free piston, coil-over mono-shock; 56 mm stroke; toolless hydraulic preload adjustment/ 4.4 in. (113 mm)

Rake (steering head):

28°

Trail:

5.2 in.

Lean Angle, Right/Left:

31°/ 32°

Wheels, Front/Rear:

Denim black, Structure cast aluminum with laser etched graphics

Wheel, Front:

16 in. x 3 in. (406 mm x 76 mm)

Wheel, Rear:

16 in. x 5 in. (406 mm x 127 mm)

Brakes, Front:

Dual 300 mm black, Split 7-spoke floating rotors; 4-piston fixed caliper

Brakes, Rear:

292 mm black, Split 7-spoke floating rotor; 2-piston floating caliper

ABS:

Standard (107: Optional)

Tire, Front:

150/80-16,71H,BW

Tire, Rear:

180/70B16,77H,BW

Harley-Davidson Fat Bob Pricing

You can score a 2022 Fat Bob in Vivid Black for $18,330 or go for the color option for $18,780. ABS and the security system come standard. West Coast brothers and sisters, alas, you can look forward to buying a special $200 emissions package just for you.

Pricing & Equipment

Model ID:

FXFBS (107: FXFB)

Standard Equipment:

ABS, Security Option

Colors:

└ 2018:

Vivid Black, Black Denim, Red Iron Denim, Bonneville Salt Denim, (114 also: Industrial Gray Denim)

└ 2019:

Vivid Black, Black Denim, Wicked Red Denim, Bonneville Salt Denim, (114 also: Rawhide Denim, Scorched Orange/Black Denim

└ 2020:

Vivid Black, Black Denim, Barracuda Silver Denim, River Rock Gray Denim, Performance Orange, Stiletto red

└ 2021:

Vivid Black, Billiard Red, Deadwood Green Denim

└ 2022:

Vivid Black, White Sand Pearl

Pricing:

└ 2018:

Vivid Black: $16,999 (114: $18,699), Color: $17,399 (114: $19,099)

└ 2019:

Vivid Black: $17,049 (114: $18,849), Color: $17,449 (114: $19,249)

└ 2020:

Vivid Black: $18,799, Color: $19,199, Custom Color: $19,749

└ 2021:

Vivid Black: $18,799, Color: $19,199

└ 2022:

Vivid Black: $18,330, Color: $18,780

Harley-Davidson Fat Bob Competitors

Gotta say it was tough to find something to go head-to-head with Harley's Dyna-turned-Softail. I see folks throwing the Ducati XDiavel around a lot, but I ain't seein' it unless you count the fact that they're both cruisers with forwarding controls.

Ducati XDiavel

Sorry folks, but the XDiavel is just an Italian crotch rocket with the footpegs in the wrong place, and people riding look like they're trying to turn Power Ranger into Easy Rider. Not only does it not work, it isn't likely to appeal to someone who is looking hard at a Fat Bob. It falls short on power at only 93 pounds o' grunt though the electronics are far and away superior to what Harley brings to the table, suspension, too.

Yamaha Star Raider

Next, I looked at the Star Raider from Yamaha. The looks are similar in that both embrace the custom culture though the Raider goes for the raked-and-stretched look as opposed to the Fat Bob's chopped-and-bobbed build. The power figures show that Yamaha has something going on over there; namely, a claimed 123 pound-foot output that shames H-D's new 107 and 114 Mil-8. Yamaha compounds the pain with a $15,199 ticket that will certainly be appealing to shoppers with no MoCo loyalty as yet, and that may be enough of a difference to buy some business away from Harley.

He Said

“If I'm honest, I'll admit that I didn't like the FXD version, and I'm only marginally more in favor of the new version. Don't get me wrong, chopped and bobbed is great, but I feel it's an artistic expression that should be done in a garage with sweat and love (not necessarily in that order), not something you roll off the showroom floor. Yeah, I know the folks nowadays lack the skills, tools, and experience (for the most part) to do it themselves, but I kinda feel like if you want to buy one of these, just go ahead and get the dealership to sew the patches on your vest, too.”

She Said

My wife and fellow motorcycle writer, Allyn Hinton, says, “The Fat Bob is the performance-driven model in the Softail lineup from the 2018 redesign. Yeah, it has a p-pad, but it isn't comfortable, so consider this a solo ride. I like the headlamp, which is unique to the Fat Bob from last year. It's more of a Mad Max look than the other Softails. The forward controls on the Fat Bob have been moved back a little and so the riding position is much more comfortable for shorter riders than on previous model years. I mention what is and isn't comfortable, but honestly, the seat is more sportbike-like in its hardness, so don't consider this a long-distance ride.”

Further Reading

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