Wide tires front and back. Classic Lakester cast aluminum wheels. The iconic steamroller stance, backed by a Milwaukee-Eight® 117 motor. LED lighting all around, Rider Safety Enhancements standard, and fine factory details that honor one of Harley-Davidson’s most legendary silhouettes. The 2026 Fat Boy is bold by design. Its iconic chrome headlight nacelle, bold lines, and one-of-a-kind stance turn every arrival into something worth noticing.
Key Specifications
| Engine Type | Milwaukee-Eight® 117 Custom |
| Engine Capacity | 117 cubic inches / 1917 cc |
| Max Power | 103 HP / 77 kW @ 4800 rpm |
| Max Torque | 126 ft-lb / 170.8 Nm @ 3000 rpm |
| Fuel Tank Capacity | 5 US gallons / 18.9 L |
| Weight (Wet/Kerb) | 694 lbs / 314.8 kg |
| Seat Height | 25.9 inches / 657.9 mm (laden) |
*n/a – information not provided by manufacturer
All Specifications
Make & Model
| Model | Harley Davidson Fat Boy |
| Year | 2026 |
Engine
| Engine Type | Milwaukee-Eight® 117 Custom |
| Displacement | 117 cubic inches / 1917 cc |
| Bore x Stroke | 4.1 inches x 4.5 inches 103.5 mm x 114.3 mm |
| Compression Ratio | 10.3:1 |
| Max Horsepower | 103 HP / 77 kW @ 4800 rpm |
| Max Torque | 126 ft-lb / 170.8 Nm @ 3000 rpm |
| Fuel-mixture System | Electronic Sequential Port Fuel Injection (ESPFI) |
| Exhaust System | 2-into-2 staggered; catalyst in muffler |
Performance
| Acceleration (0-100 km/h, 0-60 mph) | n/a |
| Fuel Consumption | 47 mpg / 20 kmpl |
| Range | ~ 235 miles / 378.2 kms |
*n/a – information not provided by manufacturer
Transmission
| Gearbox | 6-Speed |
| Primary Drive Ratio | 34:46 |
| Gear Ratios | 1st gear – 9.311 2nd gear – 6.454 3rd gear – 4.793 4th gear – 3.882 5th gear – 3.307 6th gear – 2.79 |
| Traction Control System | C-TCS |
Electrical & Electronics System
| Headlight Type | All LED headlamp, low and high beam with signature position lighting |
| Taillight Type | Bullet-style, LED stop/tail/turn signals |
| Instrumentation | 5-inch analog speedometer with digital gear, odometer, fuel level, ride modes, heated gear, traction control, ABS, TPMS, cruise control, clock, trip, range and tachometer indication |
| Riding Modes | Road, Rain, Sport |
| Traction Control System | C-TCS |
| ABS | C-ABS |
| Cruise Control | Standard |
Chassis & Suspension
| Front Suspension | Dual-bending valve 49 mm telescopic with aluminum fork triple clamps; dual rate spring; “beer can” covers |
| Rear Suspension | Hidden, free piston, coil-over monoshock; 43mm stroke; hydraulic preload adjustment |
| Rake | 30 |
| Trail | 4.1 inches / 104.1 mm |
Wheels & Brakes
| Wheels | Machined, Lakester cast aluminum |
| Front Wheel/Rim Size | 18 in. |
| Front Tire Size | 160/60R18,70V,BW |
| Rear Wheel/Rim Size | 18 in. |
| Rear Tire Size | 240/40R18,79V,BW |
| Front Brakes | Front, 4-piston fixed front |
| Rear Brakes | Rear silver, Split 7-spoke floating rotors, 2-piston floating rear |
| ABS | C-ABS |
Dimension & Weights
| Overall Length | 93.1 inches / 2364.7 mm |
| Overall Width | 40 inches / 1016 mm |
| Seat Height | 25.9 inches / 657.9 mm (laden) |
| Wheelbase | 65 inches / 1651 mm |
| Ground Clearance | 4.9 inches / 124.5 mm |
| Fuel Tank Capacity | 5 US gallons / 18.9 L |
| Wet (kerb/curb) Weight | 694 lbs / 314.8 kg |
Rider Safety Enhancements
- Anti-lock Brake System (ABS)
- ABS is designed to prevent the wheels from locking under braking and helps the rider maintain control when braking in a straight-line, urgent situation.
- Traction Control System (TCS)
- The TCS is designed to keep the rear wheel from “spinning out” when the motorcycle is accelerating in a straight line and enhances rider confidence.
- Drag-Torque Slip Control System (DSCS)
- DSCS is designed to reduce excessive rear-wheel slip and help prevent rear-wheel lock under powertrain-induced deceleration, which typically occurs when the rider makes an abrupt downshift gear change or quickly reduces the throttle while on wet or slippery road surfaces.
- Tire Pressure Monitoring System (TPMS)
- TPMS alerts the rider through the information display to low or high tire air pressure. Maintaining proper tire air pressure is important both for vehicle performance and tire life.
- Cornering Enhanced Anti-lock Brake System (C-ABS)
- C-ABS is a variant of ABS that takes into consideration the lean angle of a two-wheel motorcycle, or the lateral acceleration of a Trike model. The brake pressure required to limit wheel slip when cornering is typically or lower than the pressure required under straight line operation.
- Cornering Enhanced Traction Control System (C-TCS)
- C-TCS is designed to prevent the rear wheel from excessive spinning under acceleration when going straight or cornering.
- Cornering Drag-Torque Slip Control System (C-DSCS)
- On motorcycles equipped with C-DSCS, the system helps keep the rear wheel from slipping or locking up when you quickly downshift or let off the throttle, especially on wet or slippery roads. When turning, it can adjust based on how much a two-wheel Motorcycle is leaning or the side-to-side motion on a Trike.
Harley Davidson Fat Boy (2026) Color Options
- Chrome
- Dark Billiard Gray
- Vivid Black
- White Onyx Pearl
- Brilliant Red
- Olive Steel Metallic/Vivid Black
