
The 2018–2020 Harley-Davidson Softail Milwaukee-Eight 107 (FLDE Deluxe) represents a significant chapter in the evolution of the brand’s cruiser lineup, blending nostalgic, post-war styling with a thoroughly modern chassis and powertrain. Launched as part of a complete ground-up redesign of the Softail platform for the 2018 model year, the FLDE Deluxe replaced the previous Twin Cam-powered model, offering riders enhanced performance, improved handling, and a more refined experience while retaining the iconic aesthetic that defined the Deluxe nameplate for years.
The introduction of the 2018 Softail family was one of the most extensive research and development projects in Harley-Davidson’s history. The company consolidated its Dyna and Softail platforms into a single, unified chassis architecture. This move aimed to streamline production and deliver a superior riding dynamic across a wide range of cruiser models.
From Twin Cam to Milwaukee-Eight: A New Era
The most substantial difference between the 2018–2020 FLDE Deluxe and its predecessor was the complete replacement of the core components. The previous generation was built around the air-cooled Twin Cam 103B engine and a traditional Softail frame, known for its hidden twin shock absorbers mounted beneath the transmission, which mimicked the look of a vintage “hardtail” frame.
The new generation introduced two key advancements:
The All-New Softail Frame: The redesigned frame was significantly lighter and stiffer than the one it replaced. Harley-Davidson engineers developed a carbon steel tubular frame with far fewer component parts and welds, resulting in a claimed 34% increase in chassis stiffness. The classic twin shocks were replaced by a single, adjustable coil-over monoshock discreetly positioned under the seat. This modern suspension design improved ride quality, increased travel, and dramatically enhanced cornering clearance and overall handling dynamics without sacrificing the signature hardtail aesthetic.
The Milwaukee-Eight 107 Engine: The FLDE Deluxe was powered by the Milwaukee-Eight 107 V-Twin engine. Displacing 107 cubic inches (1746cc), this powertrain featured four-valve cylinder heads and dual spark plugs for improved airflow and more efficient combustion. A key feature was the inclusion of a single internal counter-balancer, which was engineered to cancel 75% of the engine’s primary vibration at idle. This resulted in a much smoother experience at a standstill and on the highway, while still retaining the classic Harley-Davidson feel that riders expect. The engine produced significantly more torque than the outgoing Twin Cam, offering stronger acceleration and passing power.
Styling and Features of the 2018–2020 Harley-Davidson Softail Milwaukee-Eight 107 (FLDE Deluxe)
While the motorcycle’s underpinnings were entirely new, the styling remained quintessentially Deluxe. The model was a clear nod to the glamour of 1950s American cruisers. Its defining visual elements included large, full-skirted steel fenders, chrome-laced wheels wrapped in wide whitewall tires, and a distinctive “tombstone” taillight.
The rider ergonomics were defined by a low-slung solo seat and pull-back handlebars that provided a relaxed, comfortable riding position. Chrome was used extensively across the bike, from the massive headlamp nacelle and triple-tree covers to the engine cases and dual shotgun exhaust. Despite its vintage appearance, the FLDE Deluxe incorporated modern technology seamlessly. All lighting, including the Daymaker Signature headlamp, turn signals, and taillight, was brilliant, long-lasting LED. A simple, tank-mounted analog speedometer featured an integrated digital display providing essential information such as a gear indicator, odometer, fuel level, and range-to-empty.
The FLDE Deluxe was produced for three model years before being discontinued from the lineup after 2020, making it a distinct and sought-after model within Harley-Davidson’s modern classic portfolio.
Specifications
| General | |
| Brand | Harley-Davidson |
| Model | Softail Deluxe |
| Model Code | FLDE |
| Model Year | 2018–2020 |
| Type | Cruiser |
| GVWR | 1160 lb. (526 kg) |
| Maximum passengers | 1 (2 with optional passenger seat) |
| Performance | |
| Max. power | (Not officially published by manufacturer) |
| Max. torque | 109 ft-lb (148 N•m) / 3000 RPM |
| Size | |
| Length | 95.1 in. (2415 mm) |
| Width | 38.8 in. (985 mm) |
| Height | 44.3 in. (1125 mm) |
| Wheelbase | 64.2 in. (1630 mm) |
| Seat height (laden) | 25.9 in. (658 mm) |
| Ground clearance | 4.5 in. (115 mm) |
| Curb weight | 697 lb. (316 kg) |
| Engine | |
| Type | Milwaukee-Eight 107, V-Twin, 4-stroke, Air & Oil Cooled |
| Displacement | 107 cu in (1746 cc) |
| Bore × Stroke | 3.937 in. × 4.374 in. (100 mm × 111.1 mm) |
| Compression ratio | 10.0:1 |
| Starting system | Electric starter |
| Fuel supplying system | Electronic Sequential Port Fuel Injection (ESPFI) |
| Oil capacity | 5.0 qt (4.7 L) |
| Engine oil type | SAE 20W-50 Harley-Davidson H-D 360 Motorcycle Oil |
| Transmission | |
| Transmission type | 6-speed, manual gear shift (Cruise Drive) |
| Clutch type | Wet, multi-disc, manual |
| Driving system | Belt drive |
| Primary reduction ratio | 1.353 |
| Final reduction ratio | 2.063 |
| Gear ratio | 1st: 3.21; 2nd: 2.22; 3rd: 1.66; 4th: 1.31; 5th: 1.09; 6th: 0.94 |
| Chassis | |
| Tire size | Front: MT90B16 72H; Rear: MU85B16 77H (Dunlop H-D Series Whitewall) |
| Rim size | Front: 16 in. Chrome Steel Laced; Rear: 16 in. Chrome Steel Laced |
| Capacity of fuel tank | 5.0 gal (18.9 L) |
| Fuel consumption | 47 MPG (5.0 L / 100 km) (estimated) |
| Electric | |
| Battery | 12V Sealed, maintenance-free |
| Headlight | LED Daymaker Signature |
| Turning light | LED |
| Tail light | LED “Tombstone” |
| Suspension | |
| Front travel | 5.1 in (130 mm) |
| Front suspension | 49mm dual-bending valve telescopic fork |
| Rear travel | 3.4 in (86 mm) |
| Rear suspension | Hidden coil-over monoshock with hydraulic preload adjustment |



