2025 BMW R 18 B vs 2018 Harley-Davidson Sportster Forty-Eight

The BMW R 18 B records higher torque and larger displacement than the Harley-Davidson Sportster Forty-Eight. The Harley-Davidson Sportster Forty-Eight has the advantage in recorded weight where both recorded values are available.

Recorded specification differences

  • Manufacturer: BMW R 18 B BMW, Harley-Davidson Sportster Forty-Eight Harley-Davidson
  • Model: BMW R 18 B BMW R 18 B, Harley-Davidson Sportster Forty-Eight Harley-Davidson Sportster Forty-Eight
  • Year: BMW R 18 B 2025, Harley-Davidson Sportster Forty-Eight 2018
  • Displacement: BMW R 18 B 1802, Harley-Davidson Sportster Forty-Eight 1202
  • Torque: BMW R 18 B 157.3, Harley-Davidson Sportster Forty-Eight 96
  • Weight: BMW R 18 B 397.8, Harley-Davidson Sportster Forty-Eight 252
  • Seat height: BMW R 18 B 71.9, Harley-Davidson Sportster Forty-Eight 71
BMW R 18 B vs Harley-Davidson Sportster Forty-Eight key specifications
SpecBMW R 18 BHarley-Davidson Sportster Forty-Eight
Year20252018
CategoryCruiserCruiser
Displacement18021202
Power-65
Torque157.396
Weight397.8252

Torque

The BMW R 18 B records 157.3 Nm of torque, 61.3 Nm (63.9%) more than the Harley-Davidson Sportster Forty-Eight at 96 Nm.

Weight

The Harley-Davidson Sportster Forty-Eight records a lower wet weight of 252 kg, 145.8 kg less than the BMW R 18 B at 397.8 kg.

Displacement

The BMW R 18 B records 1802 cc, 600 cc (49.9%) more than the Harley-Davidson Sportster Forty-Eight at 1202 cc.

Seat height

The BMW R 18 B has a higher recorded seat height (71.9) than the Harley-Davidson Sportster Forty-Eight (71), a difference of 0.9.

Frequently asked questions

Which motorcycle records more torque, the BMW R 18 B or the Harley-Davidson Sportster Forty-Eight?

The BMW R 18 B records 157.3 Nm of torque, 61.3 Nm (63.9%) more than the Harley-Davidson Sportster Forty-Eight at 96 Nm.

Which motorcycle records the lower weight, the BMW R 18 B or the Harley-Davidson Sportster Forty-Eight?

The Harley-Davidson Sportster Forty-Eight records a lower wet weight of 252 kg, 145.8 kg less than the BMW R 18 B at 397.8 kg.

Which motorcycle records larger displacement, the BMW R 18 B or the Harley-Davidson Sportster Forty-Eight?

The BMW R 18 B records 1802 cc, 600 cc (49.9%) more than the Harley-Davidson Sportster Forty-Eight at 1202 cc.

How do the recorded seat heights of the BMW R 18 B and the Harley-Davidson Sportster Forty-Eight compare?

The BMW R 18 B has a higher recorded seat height (71.9) than the Harley-Davidson Sportster Forty-Eight (71), a difference of 0.9.

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BMW logo

BMW R 18 B

2025Cruiser

Displacement1802 cc
HA

Harley-Davidson Sportster Forty-Eight

2018Cruiser

Displacement1202 cc
Power65 hp

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BMW R 18 B

2025 • Cruiser

Harley-Davidson Sportster Forty-Eight

2018 • Cruiser

Engine & Performance

Engine Displacement
1802 cc
1202 cc
Power
-
65 hp
Torque
157.3 Nm
96 Nm
Engine Type
Boxer
V-Twin
Engine Details
Boxer | DOHC | Cylinder: 4
V-Twin | DOHC | Cylinder: 2
Power / Weight
-
0.263 hp/kg
Valves / Cylinder
4
-
Compression Ratio
9.6:1
9.7:1

Fuel & Capacity

Fuel System
Injection
Injection
Cooling System
Air-cooled
Air-cooled
Starter
Electric
Electric

Transmission & Drive

Gearbox
Manual 6-speed
Manual 6-speed
Transmission
Shaft
Belt

Chassis & Suspension

Front Suspension
Telescopic
Telescopic
Rear Suspension
Swing-Arm
Twin-Shock

Brake System

Front Brakes
Disc x2 ABS
Disc ABS
Rear Brakes
Disc ABS
Disc ABS

Tires & Wheels

Front Tyre
120/70-R19
130/90-B16
Rear Tyre
180/65-B18
150/80-B16

Dimensions & Weight

Length
256 cm
221 cm
Height
140 cm
-
Seat Height
71.9 cm
71 cm
Wheelbase
169.4 cm
149.5 cm
Ground Clearance
-
11 cm
Dry Weight
-
247 kg
Wet Weight
397.8 kg
252 kg

Disclaimer: The technical specifications, performance values, ride profile analyses, match scores, and other data presented on this page are compiled for informational purposes and processed through algorithmic calculations. Their source, license, and commercial-use rights are not fully documented. This information does not constitute a definitive, official, or binding reference. Actual values may vary depending on the model year, market, equipment options, riding conditions, and individual use. Before making a purchase decision, we strongly recommend consulting an authorized dealer or the manufacturer for verified and up-to-date specifications. RPMVault assumes no liability for any decisions made based on the information provided on this page.