Back to Bike FinderYears: 1941 · 1940 · 1939 · 1938
BMW R71
1941Cruiser

BMW R71

Key specifications

Engine
746 cc
Power
22 HP
Fuel type
petrol
Fuel capacity
3.7 L
Transmission
4-speed
Front brakes
Expanding brake (drum brake). Single
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1941 BMW R71, a striking representation of pre-war motorcycle engineering that melds classic aesthetics with solid performance. Positioned in the custom-cruiser category, the R71 is a beloved relic, celebrated by enthusiasts and collectors alike for its iconic design and robust construction. With its sleek lines and distinctive boxer engine, this motorcycle not only embodies the spirit of the era but also offers a glimpse into the innovative spirit of BMW during a tumultuous time in history. At the heart of the R71 is its powerful 746 cc two-cylinder boxer engine, which delivers a respectable 22.03 HP at 4600 RPM. Riders will appreciate the smooth, torquey performance that this four-stroke engine provides, making the R71 a pleasure to ride on both city streets and winding country roads. With a top speed of 125 km/h (77.7 mph), this motorcycle offers a thrilling ride without sacrificing comfort. The air-cooled engine operates efficiently, consuming just 4.50 liters per 100 km, allowing for longer journeys before needing to refuel. The four-speed gearbox paired with a reliable shaft drive ensures that power is delivered seamlessly to the rear wheel, while the dry single-plate clutch adds a touch of traditional charm to the riding experience. The R71 is not just about performance; it also boasts several key features that enhance its riding experience and overall functionality. The front and rear expanding drum brakes, each measuring 200 mm, provide reliable stopping power, while the cartridge front suspension and twin shock swingarm rear suspension work together to deliver a smooth and stable ride. With a weight of 187 kg (412.3 pounds) and dimensions that make it approachable for riders of various heights, the R71 strikes a fine balance between agility and sturdiness. Its kick starter adds a nostalgic touch, reminding riders of a simpler time in motorcycling history. **

Pros

  • Iconic Design: The R71’s classic styling and distinctive boxer engine make it a head-turner on any road.
  • Fuel Efficiency: With a consumption of 4.50 liters per 100 km, it’s an economical choice for longer rides.
  • Smooth Ride: The combination of the suspension system and shaft drive contributes to a comfortable and stable riding experience.

Cons

  • Limited Power: With just over 22 HP, it may not satisfy riders looking for a high-performance motorcycle.
  • Drum Brakes: While adequate for its time, the drum brake system may feel less responsive compared to modern hydraulic disc brakes.
  • Kick Start Only: The absence of an electric starter can be cumbersome for some riders, particularly in challenging conditions.

Technical details

Source specification data

Make
BMW
Model
R71
Category
Custom-cruiser
Starter
Kick
Power
22.03 HP (16.1 kW)) @ 4600 RPM
Clutch
Dry-single plate-cable operated
Gearbox
4-speed
Top Speed
125.0 km/h (77.7 mph)
Fuel System
Carburettor. Graetzin G24
Bore X Stroke
78.0 x 78.0 mm (3.1 x 3.1 inches)
Compression
5.5:1
Displacement
746.00 ccm (45.52 cubic inches)
Cooling System
Air
Engine Details
Two cylinder boxer, four-stroke
Fuel Consumption
4.50 litres/100 km (22.2 km/l or 52.27 mpg)
Greenhouse Gases
O2
g/km. (
O2
-
Carbon
dioxide emission)
Lubrication System
Wet sump
Transmission Type Final Drive
Shaft drive (cardan)
Fuel Capacity
14.00 litres (3.70 gallons)
Overall Width
815 mm (32.1 inches)
Overall Height
960 mm (37.8 inches)
Overall Length
2,130 mm (83.9 inches)
Weight Incl Oil Gas Etc
187.0 kg (412.3 pounds)
Wheels
Spoked
Rear Tyre
3.5-19
Front Tyre
3.5-19
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Expanding brake (drum brake). Single
Rear Suspension
Twin shock-Swingarm
Front Suspension
Cartridge
Rear Brakes Diameter
200 mm (7.9 inches)
Front Brakes Diameter
200 mm (7.9 inches)