Harley-Davidson Forty-Eight - 2021 Specifications and Reviews

The 2021 Harley-Davidson Forty-Eight is a lightweight custom cruiser powered by the iconic 1202cc Evolution V-twin engine, delivering 65 horsepower and strong low-end torque. Built for riders seeking classic style with modern reliability, it excels as an accessible entry point into the Harley cruiser lineup. Known for its minimalist design, nimble handling, and authentic bobber aesthetic, the Forty-Eight combines vintage appeal with contemporary fuel injection technology.

2021
5 stars Average rating: 5 from 1 votes
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General information

CategoryCustom / cruiser
Year2021
ModelHarley-Davidson Forty-Eight
 
 

Engine and Transmission Specifications

Exhaust systemBlack, staggered exhaust with slash-cut mufflers
Greenhouse gases113.7 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption4.90 litres/100 km (20.4 km/l or 48.00 mpg)
Driveline38/57 ratio
ClutchMulti-plate with diaphragm spring in oil bath
Transmission typeBelt   (final drive)
Gearbox6-speed
Cooling systemAir
Lubrication systemDry sump
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection. Electronic Sequential Port Fuel Injection
Bore x Stroke88.9 x 96.8 mm (3.5 x 3.8 inches)
Compression10.0:1
Torque99.0 Nm (10.1 kgf-m or 73.0 ft.lbs) @ 3500 RPM
Power65.0 HP (47.4 kW) @ 6000 RPM
Engine detailsEvolution® engine
Engine typeV2, four-stroke
Capacity:1202.0 ccm (73.35 cubic inches)

Brakes, suspension, Frame and wheels

WheelsBlack, Split 9-Spoke Cast Aluminum with Machined Highlights
Rear brakesSingle disc. Single-piston. Optional ABS.
Front brakesSingle disc. Dual-piston. Optional ABS.
Rear tire150/80-B16
Front tire130/90-B16
Rear SuspensionTwin shocks
Front SuspensionTelescopic fork
Trail135 mm (5.3 inches)
Rake (fork angle)30.2°
 
 

Physical measures and capacities

Oil capacity2.80 litres (2.96 US quarts)
Fuel capacity7.90 litres (2.09 US gallons)
Wheelbase1495 mm (58.9 inches)
Ground clearance110 mm (4.3 inches)
Overall length2164 mm (85.2 inches)
Alternate seat height711 mm (28.0 inches) If adjustable, highest setting.
Seat height665 mm (26.2 inches) If adjustable, lowest setting.
Power/weight ratio0.2632 HP/kg
Weight incl. oil, gas, etc252.0 kg (555.6 pounds)
Dry weight247.0 kg (544.5 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
LightHigh beam, neutral, low oil pressure, turn signals, engine diagnostics, low fuel warning, low battery, security system (optional)
InstrumentsHandlebar-mounted electronic speedometer with odometer, time-of-day clock, dual tripmeter, low fuel warning light, low oil pressure light, engine diagnostics readout, LED indicator lights
StarterElectric
Color optionsVivid Black, Midnight Crimson Red, Billiard Teal

Performance Profile & Rider Fit

65 hp
Peak Power
5.5s
0-60 mph

Best For

Track10%
City65%
Cornering35%
Daily Riding55%
Touring30%
Passenger25%

Rider Profile

Best ForBest suited to riders who already have some experience with heavy, low-slung cruisers due to its weight and limited cornering clearance.
PurposeBuilt for short, stylish cruising and boulevard riding rather than outright performance or distance touring.
Rider FitThe very low seat height makes it approachable for shorter riders, though its weight requires some strength at low speed and in tight maneuvers.
CharacterA classic bobber-styled Harley cruiser that delivers strong low-end torque, relaxed cruising feel, and unmistakable custom presence rather than outright speed.
Not Ideal ForNot a good fit for riders seeking long-distance touring comfort, aggressive cornering ability, or off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 Harley-Davidson Forty-Eight Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 665mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2021 Harley-Davidson Forty-Eight, with a cramped knee angle of around 70 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
64x64

MotorcycleDB Review

The 2021 Harley-Davidson Forty-Eight is a stunning motorcycle that offers a unique blend of retro style and modern performance. With its iconic peanut fuel tank, wide handlebars, and fat tires, this bike certainly stands out on the road. The 1200cc Evolution engine provides plenty of power, while the low-slung solo seat and slammed suspension make for a comfortable and confident ride. Whether you're cruising through city streets or hitting the open highway, the Forty-Eight delivers an exhilarating experience that is sure to turn heads. Overall, the 2021 Harley-Davidson Forty-Eight is a fantastic choice for riders who are looking for a bold and distinctive bike with impressive performance. Its combination of classic design elements and cutting-edge technology make it a standout in the world of motorcycles. With its powerful engine, comfortable ride, and unmistakable style, the Forty-Eight is a machine that truly embodies the spirit of the Harley-Davidson brand. If you're in the market for a motorcycle that is as much a work of art as it is a mode of transportation, the 2021 Forty-Eight is definitely worth considering.
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