2018 Harley-Davidson Fat Bob® 107


The Fat Bob features aggressive, unapologetic styling, mind-blowing performance and handling, premium finishes, and your choice of the powerful Milwaukee-Eight® 107 or 114 Big Twin Engine.

Styling + Features

  • BOLD.FEARLESS. GROUNDBREAKING: 33 pounds lighter with massive engine power, asphalt-eating traction, and pothole devouring suspension.
  • INVERTED FORKS: The inverted front forks deliver more precise handling.
  • DUAL DISC FRONT BRAKES: The Milwaukee-Eight® engine is not short on power. And these high-performance dual disc brakes help you keep that power in check when you need to.
  • 2-1-2 EXHAUST: Big performance-inspired, upswept exhaust with a custom contrast finish.
  • CAST WHEELS WITH FAT TIRES: Bold aluminum wheels with fat, aggressive tires that give you asphalt-eating traction.
  • MILWAUKEE-EIGHT® BIG TWIN ENGINE: A powerful, smooth-running engine with crisp throttle response and a pure, soul-satisfying rumble.
  • LED LIGHTING: A bold headlight design that gives you greater visibility at night and during the day makes sure all eyes are focused on you.
  • HIGH PERFORMANCE FRONT SUSPENSION: New Showa® SDBV® suspension technology provides the performance of a racing-style cartridge fork for reduced weight with linear damping characteristics.
  • HIGH PERFORMANCE REAR MONO SHOCK: Easily adjustable mono-shock rear suspension allows for dynamic cornering capability while preserving the hardtail look.

General Information

Manufacturer Harley-Davidson
Model Year 2018
Model Fat Bob® 107
Model Code FATBOB
Color Black Denim



Front - 4-piston fixed

Rear - 2-piston floating

Wheels Front and Rear - Structure cast aluminum with laser etched graphics
Wheel Colors Denim Black

Front - 150/80-16,71H BW

Rear - 180/70B16,77H BW


Length 92.1 in.

As shipped - 653 lb.

In running order - 673 lb.

Ground Clearance 4.7 in.
Wheelbase 63.6 in.
Seat Height

Laden - 27.7 in.

Unladen - 28 in.


Lighting High beam, turn signals, neutral, low oil pressure, engine diagnostics, security, low battery voltage, low fuel


Engine Milwaukee-Eight® 107
Displacement 1,753 cc (107 cu. in.)
Bore x Stroke 3.937 x 4.374 in.
Torque 107 ft. / lb. @ 3,500 rpm
Compression Ratio 10.0:1
Fuel System Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Capacity 3.6 gal.
MPG Rating Estimated - City / Hwy - 47
Exhaust 2-into-1-into-2 dual side; catalyst in header
Gear Ratio


1st - 9.311

2nd - 6.454

3rd - 4.793

4th - 3.882

5th - 3.307

6th - 2.79


Oil Capacity 5 qt.
Primary Drive Chain, 34 / 46 ratio
Rake 28°
Trail 5.2 in.
Instrumentation 4 in. with digital speedometer, gear, odometer, fuel level and analog tachometer indication


Additional Colors

Vivid Black

Black Denim

Red Iron Denim

Bonneville Salt Denim